update .task.mk

.task.mk

@@ -1,7 +1,7 @@
 # }> [github.com/daylinmorgan/task.mk] <{ #
 # Copyright (c) 2022 Daylin Morgan
 # MIT License
-# version: v22.9.19-5-g5f593e3-dev
+# version: v22.9.28-dev
 #
 # task.mk should be included at the bottom of your Makefile with `-include .task.mk`
 # See below for the standard configuration options that should be set prior to including this file.
@@ -12,12 +12,13 @@ ACCENT_STYLE ?= b_yellow
 PARAMS_STYLE ?= $(ACCENT_STYLE)
 GOAL_STYLE ?= $(ACCENT_STYLE)
 MSG_STYLE ?= faint
-DIVIDER_STYLE ?= default
 DIVIDER ?= ─
+DIVIDER_STYLE ?= default
 HELP_SEP ?= │
+WRAP ?= 100
 # python f-string literals
 EPILOG ?=
-USAGE ?={ansi.$(HEADER_STYLE)}usage{ansi.end}:\n  make <recipe>\n
+USAGE ?={ansi.header}usage{ansi.end}:\n  make <recipe>\n
 INHERIT_SHELL ?=
 # ---- [builtin recipes] ---- #
 ifeq (help,$(firstword $(MAKECMDGOALS)))
@@ -25,10 +26,8 @@ ifeq (help,$(firstword $(MAKECMDGOALS)))
 	export HELP_ARGS
 endif
 ## h, help | show this help
-.PHONY: help h
+h help:
-help h:
+	$(call py,help_py) || { echo "exiting early!"; exit 1; }
-	$(call py,help_py)
-.PHONY: _help
 _help: export SHOW_HIDDEN=true
 _help: help
 ifdef PRINT_VARS
@@ -40,20 +39,21 @@ endif
 ### | args: -ws --hidden
 ### task.mk builtins: | args: -d --hidden
 ## _print-ansi | show all possible ansi color code combinations
-.PHONY:
 _print-ansi:
 	$(call py,print_ansi_py)
 # functions to take f-string literals and pass to python print
-tprint = $(call py,info_py,$(1))
+tprint = $(call py,print_py,$(1))
-tprint-sh = $(call pysh,info_py,$(1))
+tprint-sh = $(call pysh,print_py,$(1))
 tconfirm = $(call py,confirm_py,$(1))
 ## _update-task.mk | downloads latest development version of task.mk
 _update-task.mk:
 	$(call tprint,{a.b_cyan}Updating task.mk{a.end})
 	curl https://raw.githubusercontent.com/daylinmorgan/task.mk/main/task.mk -o .task.mk
-export MAKEFILE_LIST
+.PHONY: h help _help _print-ansi _update-task.mk
+TASK_MAKEFILE_LIST := $(filter-out $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+export MAKEFILE_LIST MAKE TASK_MAKEFILE_LIST
 ifndef INHERIT_SHELL
-SHELL := /bin/bash
+SHELL := $(shell which bash)
 endif
 # ---- [python/bash script runner] ---- #
 define _newline
@@ -84,8 +84,10 @@ import argparse
 from collections import namedtuple
 import os
 import re
-$(ansi_py)
+import subprocess
-$(quit_make_py)
+import sys
+from textwrap import wrap
+$(utils_py)
 MaxLens = namedtuple("MaxLens", "goal msg")
 pattern = re.compile(
     r"^## (?P<goal>.*?) \| (?P<msg>.*?)(?:\s?\| args: (?P<msgargs>.*?))?$$|^### (?P<rawmsg>.*?)?(?:\s?\| args: (?P<rawargs>.*?))?$$"
@@ -100,9 +102,11 @@ def parseargs(argstring):
     parser.add_argument("-gs", "--goal-style", type=str)
     parser.add_argument("--hidden", action="store_true")
     return parser.parse_args(argstring.split())
+def divider(len):
+    return ansi.style(f"  {cfg.div*len}", "div_style")
 def gen_makefile():
     makefile = ""
-    for file in os.getenv("MAKEFILE_LIST").split():
+    for file in os.getenv("MAKEFILE_LIST", "").split():
         with open(file, "r") as f:
             makefile += f.read() + "\n\n"
     return makefile
@@ -132,58 +136,80 @@ def recipe_help_header(goal):
             item[0].get("msgargs", ""),
         )
     else:
-        return f"  {ansi.style(goal,'$(GOAL_STYLE)')}:"
+        return f"  {ansi.style(goal,'goal')}"
+def get_goal_deps(goal="task.mk"):
+    make = os.getenv("MAKE", "make")
+    cmd = [make, "-p", "-n", "-i"]
+    for file in os.getenv("TASK_MAKEFILE_LIST", "").split():
+        cmd.extend(["-f", file])
+    database = subprocess.check_output(cmd, universal_newlines=True)
+    dep_pattern = re.compile(r"^" + goal + ":(.*)?")
+    for line in database.splitlines():
+        match = dep_pattern.search(line)
+        if match and match.groups()[0]:
+            return wrap(
+                f"{ansi.style('deps','default')}: {ansi.style(match.groups()[0].strip(),'msg')}",
+                width=cfg.wrap,
+                initial_indent="  ",
+                subsequent_indent="  ",
+            )
 def parse_goal(file, goal):
     goals = goal_pattern.findall(file)
     matched_goal = [i for i in goals if goal in i.split()]
     output = []
     if matched_goal:
         output.append(recipe_help_header(matched_goal[0]))
+        deps = get_goal_deps(matched_goal[0])
+        if deps:
+            output.extend(deps)
         lines = file.splitlines()
         loc = [n for n, l in enumerate(lines) if l.startswith(f"{matched_goal[0]}:")][0]
         recipe = []
         for line in lines[loc + 1 :]:
             if not line.startswith("\t"):
                 break
-            recipe.append(line)
+            recipe.append(f"  {line.strip()}")
-        output.append(divider(max((len(l) for l in recipe)) + 5))
+        output.append(divider(max((len(l.strip()) for l in recipe))))
-        output.append("\n".join(recipe) + "\n")
+        output.append("\n".join(recipe))
     else:
-        output.append(f"{ansi.b_red}ERROR{ansi.end} Failed to find goal: {goal}")
+        deps = get_goal_deps(goal)
+        if deps:
+            output.append(recipe_help_header(goal))
+            output.extend(deps)
+    if not output:
+        output.append(f"{ansi.style('ERROR','b_red')}: Failed to find goal: {goal}")
     return output
 def fmt_goal(goal, msg, max_goal_len, argstr):
     args = parseargs(argstr)
-    goal_style = args.goal_style.strip() if args.goal_style else "$(GOAL_STYLE)"
+    goal_style = args.goal_style.strip() if args.goal_style else "goal"
-    msg_style = args.msg_style.strip() if args.msg_style else "$(MSG_STYLE)"
+    msg_style = args.msg_style.strip() if args.msg_style else "msg"
     return (
         ansi.style(f"  {goal:>{max_goal_len}}", goal_style)
         + f" $(HELP_SEP) "
         + ansi.style(msg, msg_style)
     )
-def divider(len):
-    return ansi.style(f"  {'$(DIVIDER)'*len}", "$(DIVIDER_STYLE)")
 def fmt_rawmsg(msg, argstr, maxlens):
     args = parseargs(argstr)
     lines = []
-    msg_style = args.msg_style.strip() if args.msg_style else "$(MSG_STYLE)"
+    msg_style = args.msg_style.strip() if args.msg_style else "msg"
     if not os.getenv("SHOW_HIDDEN") and args.hidden:
         return []
     if msg:
         if args.align == "sep":
             lines.append(
-                f"{' '*(maxlens.goal+len('$(HELP_SEP)')+4)}{ansi.style(msg,msg_style)}"
+                f"{' '*(maxlens.goal+len(cfg.sep)+4)}{ansi.style(msg,msg_style)}"
             )
         elif args.align == "center":
             lines.append(f"  {ansi.style(msg.center(sum(maxlens)),msg_style)}")
         else:
             lines.append(f"  {ansi.style(msg,msg_style)}")
     if args.divider:
-        lines.append(divider(len("$(HELP_SEP)") + sum(maxlens) + 2))
+        lines.append(divider(len(cfg.sep) + sum(maxlens) + 2))
     if args.whitespace:
         lines.append("\n")
     return lines
 def print_help():
-    lines = [f"""$(USAGE)"""]
+    lines = [cfg.usage]
     items = list(parse_help(gen_makefile()))
     maxlens = MaxLens(
         *(max((len(item[x]) for item in items if x in item)) for x in ["goal", "msg"])
@@ -197,25 +223,73 @@ def print_help():
             )
         if "rawmsg" in item:
             lines.extend(fmt_rawmsg(item["rawmsg"], item.get("rawargs", ""), maxlens))
-    lines.append(f"""$(EPILOG)""")
+    lines.append(cfg.epilog)
     print("\n".join(lines))
 def print_arg_help(help_args):
+    print(f"{ansi.style('task.mk recipe help','header')}\n")
     for arg in help_args.split():
-        print(f"{ansi.style('task.mk recipe help','$(HEADER_STYLE)')}\n")
         print("\n".join(parse_goal(gen_makefile(), arg)))
+    print()
 def main():
     help_args = os.getenv("HELP_ARGS")
     if help_args:
-        quit_make()
         print_arg_help(help_args)
+        sys.exit(1)
     else:
         print_help()
 if __name__ == "__main__":
     main()
 endef
-define  ansi_py
+define  print_py
+$(utils_py)
+sys.stderr.write(f"""$(2)\n""")
+endef
+define  print_ansi_py
+$(utils_py)
+sep = f"$(HELP_SEP)"
+codes_names = {getattr(ansi, attr): attr for attr in ansi.__dict__}
+for code in sorted(codes_names.keys(), key=lambda item: (len(item), item)):
+    print(f"{codes_names[code]:>20} {sep} {code+'*****'+ansi.end} {sep} {repr(code)}")
+endef
+define  vars_py
+import os
+$(utils_py)
+vars = "$2".split()
+length = max((len(v) for v in vars))
+print(f"{ansi.header}vars{ansi.end}:\n")
+for v in vars:
+    print(f"  {ansi.params}{v:<{length}}{ansi.end} = {os.getenv(v)}")
+print()
+endef
+define  confirm_py
+import sys
+$(utils_py)
+def confirm():
+    """
+    Ask user to enter Y or N (case-insensitive).
+    :return: True if the answer is Y.
+    :rtype: bool
+    """
+    answer = ""
+    while answer not in ["y", "n"]:
+        answer = input(f"""$(2) {a.b_red}[Y/n]{a.end} """).lower()
+    return answer == "y"
+if confirm():
+    sys.exit()
+else:
+    sys.exit(1)
+endef
+define  utils_py
 import os
 import sys
+from dataclasses import dataclass
+@dataclass
+class Config:
+    div: str
+    sep: str
+    epilog: str
+    usage: str
+    wrap: int
 color2byte = dict(
     black=0,
     red=1,
@@ -247,6 +321,7 @@ class Ansi:
                 )
         for name, byte in state2byte.items():
             self.setcode(name, f"\033[{byte}m")
+        self.add_cfg()
     def setcode(self, name, escape_code):
         """create attr for style and escape code"""
         if not sys.stdout.isatty() or os.getenv("NO_COLOR", False):
@@ -256,27 +331,41 @@ class Ansi:
     def custom(self, fg=None, bg=None):
         """use custom color"""
         code, end = "\033[", "m"
-        if fg:
+        if not sys.stdout.isatty() or os.getenv("NO_COLOR", False):
-            if isinstance(fg, int):
+            return ""
-                code += f"38;5;{fg}"
+        else:
-            elif (isinstance(fg, list) or isinstance(fg, tuple)) and len(fg) == 1:
+            if fg:
-                code += f"38;5;{fg[0]}"
+                if isinstance(fg, int):
-            elif (isinstance(fg, list) or isinstance(fg, tuple)) and len(fg) == 3:
+                    code += f"38;5;{fg}"
-                code += f"38;2;{';'.join((str(i) for i in fg))}"
+                elif (isinstance(fg, list) or isinstance(fg, tuple)) and len(fg) == 1:
-            else:
+                    code += f"38;5;{fg[0]}"
-                print("Expected one or three values for fg as a list")
+                elif (isinstance(fg, list) or isinstance(fg, tuple)) and len(fg) == 3:
-                sys.exit(1)
+                    code += f"38;2;{';'.join((str(i) for i in fg))}"
-        if bg:
+                else:
-            if isinstance(bg, int):
+                    print("Expected one or three values for fg as a list")
-                code += f"{';' if fg else ''}48;5;{bg}"
+                    sys.exit(1)
-            elif (isinstance(bg, list) or isinstance(bg, tuple)) and len(bg) == 1:
+            if bg:
-                code += f"{';' if fg else ''}48;5;{bg[0]}"
+                if isinstance(bg, int):
-            elif (isinstance(bg, list) or isinstance(bg, tuple)) and len(bg) == 3:
+                    code += f"{';' if fg else ''}48;5;{bg}"
-                code += f"{';' if fg else ''}48;2;{';'.join((str(i) for i in bg))}"
+                elif (isinstance(bg, list) or isinstance(bg, tuple)) and len(bg) == 1:
-            else:
+                    code += f"{';' if fg else ''}48;5;{bg[0]}"
-                print("Expected one or three values for bg as a list")
+                elif (isinstance(bg, list) or isinstance(bg, tuple)) and len(bg) == 3:
-                sys.exit(1)
+                    code += f"{';' if fg else ''}48;2;{';'.join((str(i) for i in bg))}"
-        return code + end
+                else:
+                    print("Expected one or three values for bg as a list")
+                    sys.exit(1)
+            return code + end
+    def add_cfg(self):
+        cfg_styles = {
+            "header": "$(HEADER_STYLE)",
+            "accent": "$(ACCENT_STYLE)",
+            "params": "$(PARAMS_STYLE)",
+            "goal": "$(GOAL_STYLE)",
+            "msg": "$(MSG_STYLE)",
+            "div_style": "$(DIVIDER_STYLE)",
+        }
+        for name, style in cfg_styles.items():
+            self.setcode(name, getattr(self, style))
     def style(self, text, style):
         if style not in self.__dict__:
             print(f"unknown style: {style}")
@@ -284,49 +373,7 @@ class Ansi:
         else:
             return f"{self.__dict__[style]}{text}{self.__dict__['end']}"
 a = ansi = Ansi()
-endef
+cfg = Config(
-define  info_py
+    "$(DIVIDER)", "$(HELP_SEP)", f"""$(EPILOG)""", f"""$(USAGE)""", int("$(WRAP)")
-$(ansi_py)
+)
-print(f"""$(2)""")
-endef
-define  print_ansi_py
-$(ansi_py)
-sep = f"$(HELP_SEP)"
-codes_names = {getattr(ansi, attr): attr for attr in ansi.__dict__}
-for code in sorted(codes_names.keys(), key=lambda item: (len(item), item)):
-    print(f"{codes_names[code]:>20} {sep} {code+'*****'+ansi.end} {sep} {repr(code)}")
-endef
-define  vars_py
-import os
-$(ansi_py)
-vars = "$2".split()
-length = max((len(v) for v in vars))
-print(f"{ansi.$(HEADER_STYLE)}vars:{ansi.end}\n")
-for v in vars:
-    print(f"  {ansi.b_magenta}{v:<{length}}{ansi.end} = {os.getenv(v)}")
-print()
-endef
-define  confirm_py
-import sys
-$(ansi_py)
-$(quit_make_py)
-def confirm():
-    """
-    Ask user to enter Y or N (case-insensitive).
-    :return: True if the answer is Y.
-    :rtype: bool
-    """
-    answer = ""
-    while answer not in ["y", "n"]:
-        answer = input(f"""$(2) {a.b_red}[Y/n]{a.end} """).lower()
-    return answer == "y"
-if confirm():
-    sys.exit()
-else:
-    quit_make()
-endef
-define  quit_make_py
-import os, signal
-def quit_make():
-    os.kill(os.getppid(), signal.SIGQUIT)
 endef

Makefile

@@ -26,7 +26,7 @@ update-fonts:
 ## check | check fc-list for MonoLisa
 .PHONY: check
 check:
-	$(call msg, Checking System for Fonts)
+	$(call msg,Checking System for Fonts)
 	@fc-list | grep "MonoLisa"
 
 ## update-src | update nerd fonts source
@@ -45,5 +45,5 @@ lint:
 clean:
 	@rm -r patched/*
 
-USAGE = {a.b_green}Update MonoLisa with Nerd Fonts! {a.end}\n\n{a.$(HEADER_STYLE)}usage{a.end}:\n	make <recipe>\n
+USAGE = {a.b_green}Update MonoLisa with Nerd Fonts! {a.end}\n\n{a.header}usage{a.end}:\n	make <recipe>\n
 -include .task.mk

bin/font-patcher

@@ -1,14 +1,14 @@
 #!/usr/bin/env python
 # coding=utf8
-# Nerd Fonts Version: 2.2.2
+# Nerd Fonts Version: 2.3.0-RC
 # Script version is further down
 
 from __future__ import absolute_import, print_function, unicode_literals
 
 # Change the script version when you edit this script:
-script_version = "3.0.6"
+script_version = "3.1.1"
 
-version = "2.2.2"
+version = "2.3.0-RC"
 projectName = "Nerd Fonts"
 projectNameAbbreviation = "NF"
 projectNameSingular = projectName[:-1]
@@ -82,15 +82,32 @@ class TableHEADWriter:
         i += 4
         extra = 0
         for j in range(4):
+            extra = extra << 8
             if i + j <= end:
                 extra += ord(self.f.read(1))
-            extra = extra << 8
         checksum = (checksum + extra) & 0xFFFFFFFF
         return checksum
 
-    def find_head_table(self):
+    def find_head_table(self, idx):
         """ Search all tables for the HEAD table and store its metadata """
-        self.f.seek(4)
+        # Use font with index idx if this is a font collection file
+        self.f.seek(0, 0)
+        tag = self.f.read(4)
+        if tag == b'ttcf':
+            self.f.seek(2*2, 1)
+            self.num_fonts = self.getlong()
+            if (idx >= self.num_fonts):
+                raise Exception('Trying to access subfont index {} but have only {} fonts'.format(idx, num_fonts))
+            for _ in range(idx + 1):
+                offset = self.getlong()
+            self.f.seek(offset, 0)
+        elif idx != 0:
+            raise Exception('Trying to access subfont but file is no collection')
+        else:
+            self.f.seek(0, 0)
+            self.num_fonts = 1
+
+        self.f.seek(4, 1)
         numtables = self.getshort()
         self.f.seek(3*2, 1)
 
@@ -102,7 +119,7 @@ class TableHEADWriter:
             self.tab_length = self.getlong()
             if tab_name == b'head':
                 return
-        raise Exception('No HEAD table found')
+        raise Exception('No HEAD table found in font idx {}'.format(idx))
 
     def goto(self, where):
         """ Go to a named location in the file or to the specified index """
@@ -146,60 +163,97 @@ class TableHEADWriter:
         self.modified = False
         self.f = open(filename, 'r+b')
 
-        self.find_head_table()
+        self.find_head_table(0)
 
         self.flags = self.getshort('flags')
         self.lowppem = self.getshort('lowestRecPPEM')
         self.checksum_adj = self.getlong('checksumAdjustment')
 
+def check_panose_monospaced(font):
+    """ Check if the font's Panose flags say it is monospaced """
+    # https://forum.high-logic.com/postedfiles/Panose.pdf
+    panose = list(font.os2_panose)
+    if panose[0] < 2 or panose[0] > 5:
+        return -1 # invalid Panose info
+    panose_mono = ((panose[0] == 2 and panose[3] == 9) or
+                   (panose[0] == 3 and panose[3] == 3))
+    return 1 if panose_mono else 0
+
+def is_monospaced(font):
+    """ Check if a font is probably monospaced """
+    # Some fonts lie (or have not any Panose flag set), spot check monospaced:
+    width = -1
+    width_mono = True
+    for glyph in [ 0x49, 0x4D, 0x57, 0x61, 0x69, 0x2E ]: # wide and slim glyphs 'I', 'M', 'W', 'a', 'i', '.'
+        if not glyph in font:
+            # A 'strange' font, believe Panose
+            return check_panose_monospaced(font) == 1
+        # print(" -> {} {}".format(glyph, font[glyph].width))
+        if width < 0:
+            width = font[glyph].width
+            continue
+        if font[glyph].width != width:
+            # Exception for fonts like Code New Roman Regular or Hermit Light/Bold:
+            # Allow small 'i' and dot to be smaller than normal
+            # I believe the source fonts are buggy
+            if glyph in [ 0x69, 0x2E ]:
+                if width > font[glyph].width:
+                    continue
+                (xmin, _, xmax, _) = font[glyph].boundingBox()
+                if width > xmax - xmin:
+                    continue
+            width_mono = False
+            break
+    # We believe our own check more then Panose ;-D
+    return width_mono
+
+def get_advance_width(font, extended, minimum):
+    """ Get the maximum/minimum advance width in the extended(?) range """
+    width = 0
+    if extended:
+        end = 0x17f
+    else:
+        end = 0x07e
+    for glyph in range(0x21, end):
+        if not glyph in font:
+            continue
+        if glyph in range(0x7F, 0xBF):
+            continue # ignore special characters like '1/4' etc
+        if width == 0:
+            width = font[glyph].width
+            continue
+        if not minimum and width < font[glyph].width:
+            width = font[glyph].width
+        elif minimum and width > font[glyph].width:
+            width = font[glyph].width
+    return width
+
 
 class font_patcher:
-    def __init__(self):
+    def __init__(self, args):
-        self.args = None  # class 'argparse.Namespace'
+        self.args = args  # class 'argparse.Namespace'
         self.sym_font_args = []
         self.config = None  # class 'configparser.ConfigParser'
         self.sourceFont = None  # class 'fontforge.font'
-        self.octiconsExactEncodingPosition = True
         self.patch_set = None  # class 'list'
         self.font_dim = None  # class 'dict'
         self.onlybitmaps = 0
-        self.extension = ""
         self.essential = set()
-        self.setup_arguments()
         self.config = configparser.ConfigParser(empty_lines_in_values=False, allow_no_value=True)
-        if not os.path.isfile(self.args.font):
+
-            sys.exit("{}: Font file does not exist: {}".format(projectName, self.args.font))
+    def patch(self, font):
-        if not os.access(self.args.font, os.R_OK):
+        self.sourceFont = font
-            sys.exit("{}: Can not open font file for reading: {}".format(projectName, self.args.font))
-        if len(fontforge.fontsInFile(self.args.font)) > 1:
-            sys.exit("{}: Font file contains {} fonts, can only handle single font files".format(projectName,
-                len(fontforge.fontsInFile(self.args.font))))
-        try:
-            self.sourceFont = fontforge.open(self.args.font, 1) # 1 = ("fstypepermitted",))
-        except Exception:
-            sys.exit(projectName + ": Can not open font, try to open with fontforge interactively to get more information")
         self.setup_version()
         self.get_essential_references()
-        self.setup_name_backup()
+        self.setup_name_backup(font)
+        if self.args.single:
+            self.assert_monospace()
         self.remove_ligatures()
-        make_sure_path_exists(self.args.outputdir)
-        self.check_position_conflicts()
         self.setup_patch_set()
         self.setup_line_dimensions()
         self.get_sourcefont_dimensions()
         self.sourceFont.encoding = 'UnicodeFull'  # Update the font encoding to ensure that the Unicode glyphs are available
         self.onlybitmaps = self.sourceFont.onlybitmaps  # Fetch this property before adding outlines. NOTE self.onlybitmaps initialized and never used
-        if self.args.extension == "":
-            self.extension = os.path.splitext(self.args.font)[1]
-        else:
-            self.extension = '.' + self.args.extension
-        if re.match("\.ttc$", self.extension, re.IGNORECASE):
-            sys.exit(projectName + ": Can not create True Type Collections")
-
-
-    def patch(self):
-
-        print("{} Patcher v{} ({}) executing\n".format(projectName, version, script_version))
 
         if self.args.single:
             # Force width to be equal on all glyphs to ensure the font is considered monospaced on Windows.
@@ -241,14 +295,11 @@ class font_patcher:
                     symfont.em = self.sourceFont.em
                     PreviousSymbolFilename = patch['Filename']
 
-                # If patch table doesn't include a source start and end, re-use the symbol font values
+                # If patch table doesn't include a source start, re-use the symbol font values
                 SrcStart = patch['SrcStart']
-                SrcEnd = patch['SrcEnd']
                 if not SrcStart:
                     SrcStart = patch['SymStart']
-                if not SrcEnd:
+                self.copy_glyphs(SrcStart, symfont, patch['SymStart'], patch['SymEnd'], patch['Exact'], patch['ScaleGlyph'], patch['Name'], patch['Attributes'])
-                    SrcEnd = patch['SymEnd']
-                self.copy_glyphs(SrcStart, SrcEnd, symfont, patch['SymStart'], patch['SymEnd'], patch['Exact'], patch['ScaleGlyph'], patch['Name'], patch['Attributes'])
 
         if symfont:
             symfont.close()
@@ -262,30 +313,49 @@ class font_patcher:
             self.sourceFont["grave"].glyphclass="baseglyph"
 
 
-    def generate(self):
+    def generate(self, sourceFonts):
-        # the `PfEd-comments` flag is required for Fontforge to save '.comment' and '.fontlog'.
+        sourceFont = sourceFonts[0]
-        if self.sourceFont.fullname != None:
+        if len(sourceFonts) > 1:
-            outfile = self.args.outputdir + "/" + self.sourceFont.fullname + self.extension
+            layer = None
-            self.sourceFont.generate(outfile, flags=(str('opentype'), str('PfEd-comments')))
+            # use first non-background layer
-            message = "\nGenerated: {} in '{}'".format(self.sourceFont.fullname, outfile)
+            for l in sourceFont.layers:
+                if not sourceFont.layers[l].is_background:
+                    layer = l
+                    break
+            outfile = os.path.normpath(os.path.join(self.args.outputdir, sourceFont.familyname + ".ttc"))
+            # the `PfEd-comments` flag is required for Fontforge to save '.comment' and '.fontlog'.
+            sourceFonts[0].generateTtc(outfile, sourceFonts[1:], flags=(str('opentype'), str('PfEd-comments')), layer=layer)
+            message = "\nGenerated: {} fonts in '{}'".format(len(sourceFonts), outfile)
         else:
-            outfile = self.args.outputdir + "/" + self.sourceFont.cidfontname + self.extension
+            fontname = sourceFont.fullname
-            self.sourceFont.generate(outfile, flags=(str('opentype'), str('PfEd-comments')))
+            if not fontname:
-            message = "\nGenerated: {} in '{}'".format(self.sourceFont.fontname, outfile)
+                fontname = sourceFont.cidfontname
+            outfile = os.path.normpath(os.path.join(self.args.outputdir, fontname + self.args.extension))
+            # the `PfEd-comments` flag is required for Fontforge to save '.comment' and '.fontlog'.
+            bitmaps = str()
+            if len(self.sourceFont.bitmapSizes):
+                print("Preserving bitmaps {}".format(self.sourceFont.bitmapSizes))
+                bitmaps = str('otf') # otf/ttf, both is bf_ttf
+            sourceFont.generate(outfile, bitmap_type=bitmaps, flags=(str('opentype'), str('PfEd-comments')))
+            message = "\nGenerated: {} in '{}'".format(self.sourceFont.fullname, outfile)
 
         # Adjust flags that can not be changed via fontforge
         try:
             source_font = TableHEADWriter(self.args.font)
             dest_font = TableHEADWriter(outfile)
-            if source_font.flags & 0x08 == 0 and dest_font.flags & 0x08 != 0:
+            for idx in range(source_font.num_fonts):
-                print("Changing flags from 0x{:X} to 0x{:X}".format(dest_font.flags, dest_font.flags & ~0x08))
+                print("{}: Tweaking {}/{}".format(projectName, idx + 1, source_font.num_fonts))
-                dest_font.putshort(dest_font.flags & ~0x08, 'flags') # clear 'ppem_to_int'
+                source_font.find_head_table(idx)
-            if source_font.lowppem != dest_font.lowppem:
+                dest_font.find_head_table(idx)
-                print("Changing lowestRecPPEM from {} to {}".format(dest_font.lowppem, source_font.lowppem))
+                if source_font.flags & 0x08 == 0 and dest_font.flags & 0x08 != 0:
-                dest_font.putshort(source_font.lowppem, 'lowestRecPPEM')
+                    print("Changing flags from 0x{:X} to 0x{:X}".format(dest_font.flags, dest_font.flags & ~0x08))
-            if dest_font.modified:
+                    dest_font.putshort(dest_font.flags & ~0x08, 'flags') # clear 'ppem_to_int'
-                dest_font.reset_table_checksum()
+                if source_font.lowppem != dest_font.lowppem:
-                dest_font.reset_full_checksum()
+                    print("Changing lowestRecPPEM from {} to {}".format(dest_font.lowppem, source_font.lowppem))
+                    dest_font.putshort(source_font.lowppem, 'lowestRecPPEM')
+                if dest_font.modified:
+                    dest_font.reset_table_checksum()
+                    dest_font.reset_full_checksum()
         except Exception as error:
             print("Can not handle font flags ({})".format(repr(error)))
         finally:
@@ -301,130 +371,19 @@ class font_patcher:
             print("\nPost Processed: {}".format(outfile))
 
 
-    def setup_arguments(self):
+    def setup_name_backup(self, font):
-        parser = argparse.ArgumentParser(
-            description=(
-                'Nerd Fonts Font Patcher: patches a given font with programming and development related glyphs\n\n'
-                '* Website: https://www.nerdfonts.com\n'
-                '* Version: ' + version + '\n'
-                '* Development Website: https://github.com/ryanoasis/nerd-fonts\n'
-                '* Changelog: https://github.com/ryanoasis/nerd-fonts/blob/master/changelog.md'),
-            formatter_class=RawTextHelpFormatter
-        )
-
-        # optional arguments
-        parser.add_argument('font',                                      help='The path to the font to patch (e.g., Inconsolata.otf)')
-        parser.add_argument('-v', '--version',                           action='version',        version=projectName + ": %(prog)s (" + version + ")")
-        parser.add_argument('-s', '--mono', '--use-single-width-glyphs', dest='single',           default=False, action='store_true', help='Whether to generate the glyphs as single-width not double-width (default is double-width)')
-        parser.add_argument('-l', '--adjust-line-height',                dest='adjustLineHeight', default=False, action='store_true', help='Whether to adjust line heights (attempt to center powerline separators more evenly)')
-        parser.add_argument('-q', '--quiet', '--shutup',                 dest='quiet',            default=False, action='store_true', help='Do not generate verbose output')
-        parser.add_argument('-w', '--windows',                           dest='windows',          default=False, action='store_true', help='Limit the internal font name to 31 characters (for Windows compatibility)')
-        parser.add_argument('-c', '--complete',                          dest='complete',         default=False, action='store_true', help='Add all available Glyphs')
-        parser.add_argument('--careful',                                 dest='careful',          default=False, action='store_true', help='Do not overwrite existing glyphs if detected')
-        parser.add_argument('--removeligs', '--removeligatures',         dest='removeligatures',  default=False, action='store_true', help='Removes ligatures specificed in JSON configuration file')
-        parser.add_argument('--postprocess',                             dest='postprocess',      default=False, type=str, nargs='?', help='Specify a Script for Post Processing')
-        parser.add_argument('--configfile',                              dest='configfile',       default=False, type=str, nargs='?', help='Specify a file path for JSON configuration file (see sample: src/config.sample.json)')
-        parser.add_argument('--custom',                                  dest='custom',           default=False, type=str, nargs='?', help='Specify a custom symbol font. All new glyphs will be copied, with no scaling applied.')
-        parser.add_argument('-ext', '--extension',                       dest='extension',        default="",    type=str, nargs='?', help='Change font file type to create (e.g., ttf, otf)')
-        parser.add_argument('-out', '--outputdir',                       dest='outputdir',        default=".",   type=str, nargs='?', help='The directory to output the patched font file to')
-        parser.add_argument('--glyphdir',                                dest='glyphdir',         default=__dir__ + "/src/glyphs/", type=str, nargs='?', help='Path to glyphs to be used for patching')
-        parser.add_argument('--makegroups',                              dest='makegroups',       default=False, action='store_true', help='Use alternative method to name patched fonts (experimental)')
-        parser.add_argument('--variable-width-glyphs',                   dest='nonmono',          default=False, action='store_true', help='Do not adjust advance width (no "overhang")')
-
-        # progress bar arguments - https://stackoverflow.com/questions/15008758/parsing-boolean-values-with-argparse
-        progressbars_group_parser = parser.add_mutually_exclusive_group(required=False)
-        progressbars_group_parser.add_argument('--progressbars',         dest='progressbars',     action='store_true',                help='Show percentage completion progress bars per Glyph Set')
-        progressbars_group_parser.add_argument('--no-progressbars',      dest='progressbars',     action='store_false',               help='Don\'t show percentage completion progress bars per Glyph Set')
-        parser.set_defaults(progressbars=True)
-        parser.add_argument('--also-windows',                            dest='alsowindows',      default=False, action='store_true', help='Create two fonts, the normal and the --windows version')
-
-        # symbol fonts to include arguments
-        sym_font_group = parser.add_argument_group('Symbol Fonts')
-        sym_font_group.add_argument('--fontawesome',                                dest='fontawesome',          default=False, action='store_true', help='Add Font Awesome Glyphs (http://fontawesome.io/)')
-        sym_font_group.add_argument('--fontawesomeextension',                       dest='fontawesomeextension', default=False, action='store_true', help='Add Font Awesome Extension Glyphs (https://andrelzgava.github.io/font-awesome-extension/)')
-        sym_font_group.add_argument('--fontlogos', '--fontlinux',                   dest='fontlogos',            default=False, action='store_true', help='Add Font Logos Glyphs (https://github.com/Lukas-W/font-logos)')
-        sym_font_group.add_argument('--octicons',                                   dest='octicons',             default=False, action='store_true', help='Add Octicons Glyphs (https://octicons.github.com)')
-        sym_font_group.add_argument('--codicons',                                   dest='codicons',             default=False, action='store_true', help='Add Codicons Glyphs (https://github.com/microsoft/vscode-codicons)')
-        sym_font_group.add_argument('--powersymbols',                               dest='powersymbols',         default=False, action='store_true', help='Add IEC Power Symbols (https://unicodepowersymbol.com/)')
-        sym_font_group.add_argument('--pomicons',                                   dest='pomicons',             default=False, action='store_true', help='Add Pomicon Glyphs (https://github.com/gabrielelana/pomicons)')
-        sym_font_group.add_argument('--powerline',                                  dest='powerline',            default=False, action='store_true', help='Add Powerline Glyphs')
-        sym_font_group.add_argument('--powerlineextra',                             dest='powerlineextra',       default=False, action='store_true', help='Add Powerline Glyphs (https://github.com/ryanoasis/powerline-extra-symbols)')
-        sym_font_group.add_argument('--material', '--materialdesignicons', '--mdi', dest='material',             default=False, action='store_true', help='Add Material Design Icons (https://github.com/templarian/MaterialDesign)')
-        sym_font_group.add_argument('--weather', '--weathericons',                  dest='weather',              default=False, action='store_true', help='Add Weather Icons (https://github.com/erikflowers/weather-icons)')
-
-        self.args = parser.parse_args()
-
-        if self.args.makegroups and not FontnameParserOK:
-            sys.exit(projectName + ": FontnameParser module missing (bin/scripts/name_parser/Fontname*), can not --makegroups".format(projectName))
-
-        # if you add a new font, set it to True here inside the if condition
-        if self.args.complete:
-            self.args.fontawesome = True
-            self.args.fontawesomeextension = True
-            self.args.fontlogos = True
-            self.args.octicons = True
-            self.args.codicons = True
-            self.args.powersymbols = True
-            self.args.pomicons = True
-            self.args.powerline = True
-            self.args.powerlineextra = True
-            self.args.material = True
-            self.args.weather = True
-
-        if not self.args.complete:
-            # add the list of arguments for each symbol font to the list self.sym_font_args
-            for action in sym_font_group._group_actions:
-                self.sym_font_args.append(action.__dict__['option_strings'])
-
-            # determine whether or not all symbol fonts are to be used
-            font_complete = True
-            for sym_font_arg_aliases in self.sym_font_args:
-                found = False
-                for alias in sym_font_arg_aliases:
-                    if alias in sys.argv:
-                        found = True
-                if found is not True:
-                    font_complete = False
-            self.args.complete = font_complete
-
-        if self.args.alsowindows:
-            self.args.windows = False
-
-        if self.args.nonmono and self.args.single:
-            print("Warniung: Specified contradicting --variable-width-glyphs and --use-single-width-glyph. Ignoring --variable-width-glyphs.")
-            self.args.nonmono = False
-
-        # this one also works but it needs to be updated every time a font is added
-        # it was a conditional in self.setup_font_names() before, but it was missing
-        # a symbol font, so it would name the font complete without being so sometimes.
-        # that's why i did the above.
-        #
-        # if you add a new font, put it in here too, as the others are
-        # self.args.complete = all([
-        #     self.args.fontawesome is True,
-        #     self.args.fontawesomeextension is True,
-        #     self.args.fontlogos is True,
-        #     self.args.octicons is True,
-        #     self.args.powersymbols is True,
-        #     self.args.pomicons is True,
-        #     self.args.powerline is True,
-        #     self.args.powerlineextra is True,
-        #     self.args.material is True,
-        #     self.args.weather is True
-        # ])
-
-
-    def setup_name_backup(self):
         """ Store the original font names to be able to rename the font multiple times """
-        self.original_fontname = self.sourceFont.fontname
+        font.persistent = {
-        self.original_fullname = self.sourceFont.fullname
+            "fontname": font.fontname,
-        self.original_familyname = self.sourceFont.familyname
+            "fullname": font.fullname,
+            "familyname": font.familyname,
+        }
 
 
-    def setup_font_names(self):
+    def setup_font_names(self, font):
-        self.sourceFont.fontname = self.original_fontname
+        font.fontname = font.persistent["fontname"]
-        self.sourceFont.fullname = self.original_fullname
+        font.fullname = font.persistent["fullname"]
-        self.sourceFont.familyname = self.original_familyname
+        font.familyname = font.persistent["familyname"]
         verboseAdditionalFontNameSuffix = " " + projectNameSingular
         if self.args.windows:  # attempt to shorten here on the additional name BEFORE trimming later
             additionalFontNameSuffix = " " + projectNameAbbreviation
@@ -471,14 +430,14 @@ class font_patcher:
             verboseAdditionalFontNameSuffix += " Mono"
 
         if FontnameParserOK and self.args.makegroups:
-            use_fullname = type(self.sourceFont.fullname) == str # Usually the fullname is better to parse
+            use_fullname = type(font.fullname) == str # Usually the fullname is better to parse
             # Use fullname if it is 'equal' to the fontname
-            if self.sourceFont.fullname:
+            if font.fullname:
-                use_fullname |= self.sourceFont.fontname.lower() == FontnameTools.postscript_char_filter(self.sourceFont.fullname).lower()
+                use_fullname |= font.fontname.lower() == FontnameTools.postscript_char_filter(font.fullname).lower()
             # Use fullname for any of these source fonts (that are impossible to disentangle from the fontname, we need the blanks)
             for hit in [ 'Meslo' ]:
-                use_fullname |= self.sourceFont.fontname.lower().startswith(hit.lower())
+                use_fullname |= font.fontname.lower().startswith(hit.lower())
-            parser_name = self.sourceFont.fullname if use_fullname else self.sourceFont.fontname
+            parser_name = font.fullname if use_fullname else font.fontname
             # Gohu fontnames hide the weight, but the file names are ok...
             if parser_name.startswith('Gohu'):
                 parser_name = os.path.splitext(os.path.basename(self.args.font))[0]
@@ -496,16 +455,16 @@ class font_patcher:
         # have an internal style defined (in sfnt_names)
         # using '([^-]*?)' to get the item before the first dash "-"
         # using '([^-]*(?!.*-))' to get the item after the last dash "-"
-        fontname, fallbackStyle = re.match("^([^-]*).*?([^-]*(?!.*-))$", self.sourceFont.fontname).groups()
+        fontname, fallbackStyle = re.match("^([^-]*).*?([^-]*(?!.*-))$", font.fontname).groups()
 
-        # dont trust 'sourceFont.familyname'
+        # dont trust 'font.familyname'
         familyname = fontname
 
         # fullname (filename) can always use long/verbose font name, even in windows
-        if self.sourceFont.fullname != None:
+        if font.fullname != None:
-            fullname = self.sourceFont.fullname + verboseAdditionalFontNameSuffix
+            fullname = font.fullname + verboseAdditionalFontNameSuffix
         else:
-            fullname = self.sourceFont.cidfontname + verboseAdditionalFontNameSuffix
+            fullname = font.cidfontname + verboseAdditionalFontNameSuffix
 
         fontname = fontname + additionalFontNameSuffix.replace(" ", "")
 
@@ -513,13 +472,13 @@ class font_patcher:
         # parse fontname if it fails:
         try:
             # search tuple:
-            subFamilyTupleIndex = [x[1] for x in self.sourceFont.sfnt_names].index("SubFamily")
+            subFamilyTupleIndex = [x[1] for x in font.sfnt_names].index("SubFamily")
 
             # String ID is at the second index in the Tuple lists
             sfntNamesStringIDIndex = 2
 
             # now we have the correct item:
-            subFamily = self.sourceFont.sfnt_names[subFamilyTupleIndex][sfntNamesStringIDIndex]
+            subFamily = font.sfnt_names[subFamilyTupleIndex][sfntNamesStringIDIndex]
         except IndexError:
             sys.stderr.write("{}: Could not find 'SubFamily' for given font, falling back to parsed fontname\n".format(projectName))
             subFamily = fallbackStyle
@@ -629,22 +588,22 @@ class font_patcher:
 
         if not (FontnameParserOK and self.args.makegroups):
             # replace any extra whitespace characters:
-            self.sourceFont.familyname = " ".join(familyname.split())
+            font.familyname = " ".join(familyname.split())
-            self.sourceFont.fullname   = " ".join(fullname.split())
+            font.fullname   = " ".join(fullname.split())
-            self.sourceFont.fontname   = " ".join(fontname.split())
+            font.fontname   = " ".join(fontname.split())
 
-            self.sourceFont.appendSFNTName(str('English (US)'), str('Preferred Family'), self.sourceFont.familyname)
+            font.appendSFNTName(str('English (US)'), str('Preferred Family'), font.familyname)
-            self.sourceFont.appendSFNTName(str('English (US)'), str('Family'), self.sourceFont.familyname)
+            font.appendSFNTName(str('English (US)'), str('Family'), font.familyname)
-            self.sourceFont.appendSFNTName(str('English (US)'), str('Compatible Full'), self.sourceFont.fullname)
+            font.appendSFNTName(str('English (US)'), str('Compatible Full'), font.fullname)
-            self.sourceFont.appendSFNTName(str('English (US)'), str('SubFamily'), subFamily)
+            font.appendSFNTName(str('English (US)'), str('SubFamily'), subFamily)
         else:
             fam_suffix = projectNameSingular if not self.args.windows else projectNameAbbreviation
             fam_suffix += ' Mono' if self.args.single else ''
             n.inject_suffix(verboseAdditionalFontNameSuffix, additionalFontNameSuffix, fam_suffix)
-            n.rename_font(self.sourceFont)
+            n.rename_font(font)
 
-        self.sourceFont.comment = projectInfo
+        font.comment = projectInfo
-        self.sourceFont.fontlog = projectInfo
+        font.fontlog = projectInfo
 
 
     def setup_version(self):
@@ -678,10 +637,19 @@ class font_patcher:
             print("No configfile given, skipping configfile related actions")
 
 
-    def check_position_conflicts(self):
+    def assert_monospace(self):
-        # Prevent glyph encoding position conflicts between glyph sets
+        # Check if the sourcefont is monospaced
-        if self.args.fontawesome and self.args.octicons:
+        width_mono = is_monospaced(self.sourceFont)
-            self.octiconsExactEncodingPosition = False
+        panose_mono = check_panose_monospaced(self.sourceFont)
+        # The following is in fact "width_mono != panose_mono", but only if panose_mono is not 'unknown'
+        if (width_mono and panose_mono == 0) or (not width_mono and panose_mono == 1):
+            print("  Warning: Monospaced check: Panose assumed to be wrong")
+            print("     Glyph widths {} / {} - {} and Panose says \"monospace {}\" ({})".format(get_advance_width(self.sourceFont, False, True),
+                get_advance_width(self.sourceFont, False, False), get_advance_width(self.sourceFont, True, False), panose_mono, list(self.sourceFont.os2_panose)))
+        if not width_mono:
+            print("  Warning: Sourcefont is not monospaced - forcing to monospace not advisable, results might be useless")
+            if self.args.single <= 1:
+                sys.exit(projectName + ": Font will not be patched! Give --mono (or -s, or --use-single-width-glyphs) twice to force patching")
 
 
     def setup_patch_set(self):
@@ -805,28 +773,28 @@ class font_patcher:
         # Define the character ranges
         # Symbol font ranges
         self.patch_set = [
-            {'Enabled': True,                           'Name': "Seti-UI + Custom",        'Filename': "original-source.otf",                            'Exact': False,                               'SymStart': 0xE4FA, 'SymEnd': 0xE534, 'SrcStart': 0xE5FA, 'SrcEnd': 0xE634, 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': True,                           'Name': "Seti-UI + Custom",        'Filename': "original-source.otf",                            'Exact': False, 'SymStart': 0xE4FA, 'SymEnd': 0xE534, 'SrcStart': 0xE5FA, 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
-            {'Enabled': True,                           'Name': "Devicons",                'Filename': "devicons.ttf",                                   'Exact': False,                               'SymStart': 0xE600, 'SymEnd': 0xE6C5, 'SrcStart': 0xE700, 'SrcEnd': 0xE7C5, 'ScaleGlyph': DEVI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': True,                           'Name': "Devicons",                'Filename': "devicons.ttf",                                   'Exact': False, 'SymStart': 0xE600, 'SymEnd': 0xE6C5, 'SrcStart': 0xE700, 'ScaleGlyph': DEVI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},
-            {'Enabled': self.args.powerline,            'Name': "Powerline Symbols",       'Filename': "powerline-symbols/PowerlineSymbols.otf",         'Exact': True,                                'SymStart': 0xE0A0, 'SymEnd': 0xE0A2, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
+            {'Enabled': self.args.powerline,            'Name': "Powerline Symbols",       'Filename': "powerline-symbols/PowerlineSymbols.otf",         'Exact': True,  'SymStart': 0xE0A0, 'SymEnd': 0xE0A2, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
-            {'Enabled': self.args.powerline,            'Name': "Powerline Symbols",       'Filename': "powerline-symbols/PowerlineSymbols.otf",         'Exact': True,                                'SymStart': 0xE0B0, 'SymEnd': 0xE0B3, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
+            {'Enabled': self.args.powerline,            'Name': "Powerline Symbols",       'Filename': "powerline-symbols/PowerlineSymbols.otf",         'Exact': True,  'SymStart': 0xE0B0, 'SymEnd': 0xE0B3, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
-            {'Enabled': self.args.powerlineextra,       'Name': "Powerline Extra Symbols", 'Filename': "PowerlineExtraSymbols.otf",                      'Exact': True,                                'SymStart': 0xE0A3, 'SymEnd': 0xE0A3, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
+            {'Enabled': self.args.powerlineextra,       'Name': "Powerline Extra Symbols", 'Filename': "PowerlineExtraSymbols.otf",                      'Exact': True,  'SymStart': 0xE0A3, 'SymEnd': 0xE0A3, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
-            {'Enabled': self.args.powerlineextra,       'Name': "Powerline Extra Symbols", 'Filename': "PowerlineExtraSymbols.otf",                      'Exact': True,                                'SymStart': 0xE0B4, 'SymEnd': 0xE0C8, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
+            {'Enabled': self.args.powerlineextra,       'Name': "Powerline Extra Symbols", 'Filename': "PowerlineExtraSymbols.otf",                      'Exact': True,  'SymStart': 0xE0B4, 'SymEnd': 0xE0C8, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
-            {'Enabled': self.args.powerlineextra,       'Name': "Powerline Extra Symbols", 'Filename': "PowerlineExtraSymbols.otf",                      'Exact': True,                                'SymStart': 0xE0CA, 'SymEnd': 0xE0CA, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
+            {'Enabled': self.args.powerlineextra,       'Name': "Powerline Extra Symbols", 'Filename': "PowerlineExtraSymbols.otf",                      'Exact': True,  'SymStart': 0xE0CA, 'SymEnd': 0xE0CA, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
-            {'Enabled': self.args.powerlineextra,       'Name': "Powerline Extra Symbols", 'Filename': "PowerlineExtraSymbols.otf",                      'Exact': True,                                'SymStart': 0xE0CC, 'SymEnd': 0xE0D4, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
+            {'Enabled': self.args.powerlineextra,       'Name': "Powerline Extra Symbols", 'Filename': "PowerlineExtraSymbols.otf",                      'Exact': True,  'SymStart': 0xE0CC, 'SymEnd': 0xE0D4, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_POWERLINE},
-            {'Enabled': self.args.pomicons,             'Name': "Pomicons",                'Filename': "Pomicons.otf",                                   'Exact': True,                                'SymStart': 0xE000, 'SymEnd': 0xE00A, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': self.args.pomicons,             'Name': "Pomicons",                'Filename': "Pomicons.otf",                                   'Exact': True,  'SymStart': 0xE000, 'SymEnd': 0xE00A, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
-            {'Enabled': self.args.fontawesome,          'Name': "Font Awesome",            'Filename': "font-awesome/FontAwesome.otf",                   'Exact': True,                                'SymStart': 0xF000, 'SymEnd': 0xF2E0, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': FONTA_SCALE_LIST, 'Attributes': SYM_ATTR_FONTA},
+            {'Enabled': self.args.fontawesome,          'Name': "Font Awesome",            'Filename': "font-awesome/FontAwesome.otf",                   'Exact': True,  'SymStart': 0xF000, 'SymEnd': 0xF2E0, 'SrcStart': None,   'ScaleGlyph': FONTA_SCALE_LIST, 'Attributes': SYM_ATTR_FONTA},
-            {'Enabled': self.args.fontawesomeextension, 'Name': "Font Awesome Extension",  'Filename': "font-awesome-extension.ttf",                     'Exact': False,                               'SymStart': 0xE000, 'SymEnd': 0xE0A9, 'SrcStart': 0xE200, 'SrcEnd': 0xE2A9, 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},  # Maximize
+            {'Enabled': self.args.fontawesomeextension, 'Name': "Font Awesome Extension",  'Filename': "font-awesome-extension.ttf",                     'Exact': False, 'SymStart': 0xE000, 'SymEnd': 0xE0A9, 'SrcStart': 0xE200, 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},  # Maximize
-            {'Enabled': self.args.powersymbols,         'Name': "Power Symbols",           'Filename': "Unicode_IEC_symbol_font.otf",                    'Exact': True,                                'SymStart': 0x23FB, 'SymEnd': 0x23FE, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},  # Power, Power On/Off, Power On, Sleep
+            {'Enabled': self.args.powersymbols,         'Name': "Power Symbols",           'Filename': "Unicode_IEC_symbol_font.otf",                    'Exact': True,  'SymStart': 0x23FB, 'SymEnd': 0x23FE, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},  # Power, Power On/Off, Power On, Sleep
-            {'Enabled': self.args.powersymbols,         'Name': "Power Symbols",           'Filename': "Unicode_IEC_symbol_font.otf",                    'Exact': True,                                'SymStart': 0x2B58, 'SymEnd': 0x2B58, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},  # Heavy Circle (aka Power Off)
+            {'Enabled': self.args.powersymbols,         'Name': "Power Symbols",           'Filename': "Unicode_IEC_symbol_font.otf",                    'Exact': True,  'SymStart': 0x2B58, 'SymEnd': 0x2B58, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},  # Heavy Circle (aka Power Off)
-            {'Enabled': self.args.material,             'Name': "Material",                'Filename': "materialdesignicons-webfont.ttf",                'Exact': False,                               'SymStart': 0xF001, 'SymEnd': 0xF847, 'SrcStart': 0xF500, 'SrcEnd': 0xFD46, 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': self.args.material,             'Name': "Material",                'Filename': "materialdesignicons-webfont.ttf",                'Exact': False, 'SymStart': 0xF001, 'SymEnd': 0xF847, 'SrcStart': 0xF500, 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
-            {'Enabled': self.args.weather,              'Name': "Weather Icons",           'Filename': "weather-icons/weathericons-regular-webfont.ttf", 'Exact': False,                               'SymStart': 0xF000, 'SymEnd': 0xF0EB, 'SrcStart': 0xE300, 'SrcEnd': 0xE3EB, 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': self.args.weather,              'Name': "Weather Icons",           'Filename': "weather-icons/weathericons-regular-webfont.ttf", 'Exact': False, 'SymStart': 0xF000, 'SymEnd': 0xF0EB, 'SrcStart': 0xE300, 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
-            {'Enabled': self.args.fontlogos,            'Name': "Font Logos",              'Filename': "font-logos.ttf",                                 'Exact': True,                                'SymStart': 0xF300, 'SymEnd': 0xF32F, 'SrcStart': None,   'SrcEnd': None  , 'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': self.args.fontlogos,            'Name': "Font Logos",              'Filename': "font-logos.ttf",                                 'Exact': True,  'SymStart': 0xF300, 'SymEnd': 0xF32F, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
-            {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': self.octiconsExactEncodingPosition,  'SymStart': 0xF000, 'SymEnd': 0xF105, 'SrcStart': 0xF400, 'SrcEnd': 0xF505, 'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Magnifying glass
+            {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': False, 'SymStart': 0xF000, 'SymEnd': 0xF105, 'SrcStart': 0xF400, 'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Magnifying glass
-            {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': self.octiconsExactEncodingPosition,  'SymStart': 0x2665, 'SymEnd': 0x2665, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Heart
+            {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': True,  'SymStart': 0x2665, 'SymEnd': 0x2665, 'SrcStart': None,   'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Heart
-            {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': self.octiconsExactEncodingPosition,  'SymStart': 0X26A1, 'SymEnd': 0X26A1, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Zap
+            {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': True,  'SymStart': 0X26A1, 'SymEnd': 0X26A1, 'SrcStart': None,   'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Zap
-            {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': self.octiconsExactEncodingPosition,  'SymStart': 0xF27C, 'SymEnd': 0xF27C, 'SrcStart': 0xF4A9, 'SrcEnd': 0xF4A9, 'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Desktop
+            {'Enabled': self.args.octicons,             'Name': "Octicons",                'Filename': "octicons.ttf",                                   'Exact': False, 'SymStart': 0xF27C, 'SymEnd': 0xF27C, 'SrcStart': 0xF4A9, 'ScaleGlyph': OCTI_SCALE_LIST,  'Attributes': SYM_ATTR_DEFAULT},  # Desktop
-            {'Enabled': self.args.codicons,             'Name': "Codicons",                'Filename': "codicons/codicon.ttf",                           'Exact': True,                                'SymStart': 0xEA60, 'SymEnd': 0xEBEB, 'SrcStart': None,   'SrcEnd': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
+            {'Enabled': self.args.codicons,             'Name': "Codicons",                'Filename': "codicons/codicon.ttf",                           'Exact': True,  'SymStart': 0xEA60, 'SymEnd': 0xEBEB, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': SYM_ATTR_DEFAULT},
-            {'Enabled': self.args.custom,               'Name': "Custom",                  'Filename': self.args.custom,                                 'Exact': True,                                'SymStart': 0x0000, 'SymEnd': 0x0000, 'SrcStart': 0x0000, 'SrcEnd': 0x0000, 'ScaleGlyph': None,             'Attributes': CUSTOM_ATTR}
+            {'Enabled': self.args.custom,               'Name': "Custom",                  'Filename': self.args.custom,                                 'Exact': True,  'SymStart': 0x0000, 'SymEnd': 0x0000, 'SrcStart': None,   'ScaleGlyph': None,             'Attributes': CUSTOM_ATTR}
         ]
 
     def setup_line_dimensions(self):
@@ -846,11 +814,6 @@ class font_patcher:
             self.sourceFont.hhea_ascent = self.sourceFont.os2_winascent
             self.sourceFont.hhea_descent = -self.sourceFont.os2_windescent
 
-        # Line gap add extra space on the bottom of the line which
-        # doesn't allow the powerline glyphs to fill the entire line.
-        self.sourceFont.hhea_linegap = 0
-        self.sourceFont.os2_typolinegap = 0
-
     def get_essential_references(self):
         """Find glyphs that are needed for the basic glyphs"""
         # Sometimes basic glyphs are constructed from multiple other glyphs.
@@ -877,6 +840,38 @@ class font_patcher:
             self.font_dim['ymin'] = self.sourceFont.os2_typodescent
             self.font_dim['ymax'] = self.sourceFont.os2_typoascent
 
+        # Calculate font height
+        self.font_dim['height'] = -self.font_dim['ymin'] + self.font_dim['ymax']
+        if self.font_dim['height'] == 0:
+            # This can only happen if the input font is empty
+            # Assume we are using our prepared templates
+            self.font_dim = {
+                'xmin'  : 0,
+                'ymin'  : -self.sourceFont.descent,
+                'xmax'  : self.sourceFont.em,
+                'ymax'  : self.sourceFont.ascent,
+                'width' : self.sourceFont.em,
+                'height': self.sourceFont.descent + self.sourceFont.ascent,
+            }
+
+        # Line gap add extra space on the bottom of the line which
+        # doesn't allow the powerline glyphs to fill the entire line.
+        # Put half of the gap into the 'cell', each top and bottom
+        gap = max(self.sourceFont.hhea_linegap, self.sourceFont.os2_typolinegap) # TODO probably wrong
+        if self.sourceFont.os2_use_typo_metrics:
+            gap = self.sourceFont.os2_typolinegap
+        self.sourceFont.hhea_linegap = 0
+        self.sourceFont.os2_typolinegap = 0
+        if gap > 0:
+            gap_top = int(gap / 2)
+            gap_bottom = gap - gap_top
+            self.font_dim['ymin'] -= gap_bottom
+            self.font_dim['ymax'] += gap_top
+            self.font_dim['height'] = -self.font_dim['ymin'] + self.font_dim['ymax']
+            self.sourceFont.os2_typoascent = self.sourceFont.os2_typoascent + gap_top
+            self.sourceFont.os2_typodescent = self.sourceFont.os2_typodescent - gap_bottom
+            # TODO Check what to do with win and hhea values
+
         # Find the biggest char width
         # Ignore the y-values, os2_winXXXXX values set above are used for line height
         #
@@ -890,22 +885,10 @@ class font_patcher:
                 continue
             if self.font_dim['width'] < self.sourceFont[glyph].width:
                 self.font_dim['width'] = self.sourceFont[glyph].width
+                # print("New MAXWIDTH-A {} {} {}".format(glyph, self.sourceFont[glyph].width, xmax))
             if xmax > self.font_dim['xmax']:
                 self.font_dim['xmax'] = xmax
-
+                # print("New MAXWIDTH-B {} {} {}".format(glyph, self.sourceFont[glyph].width, xmax))
-        # Calculate font height
-        self.font_dim['height'] = abs(self.font_dim['ymin']) + self.font_dim['ymax']
-        if self.font_dim['height'] == 0:
-            # This can only happen if the input font is empty
-            # Assume we are using our prepared templates
-            self.font_dim = {
-                'xmin'  : 0,
-                'ymin'  : -self.sourceFont.descent,
-                'xmax'  : self.sourceFont.em,
-                'ymax'  : self.sourceFont.ascent,
-                'width' : self.sourceFont.em,
-                'height': abs(self.sourceFont.descent) + self.sourceFont.ascent,
-            }
 
 
     def get_scale_factor(self, sym_dim):
@@ -921,19 +904,16 @@ class font_patcher:
         return scale_ratio
 
 
-    def copy_glyphs(self, sourceFontStart, sourceFontEnd, symbolFont, symbolFontStart, symbolFontEnd, exactEncoding, scaleGlyph, setName, attributes):
+    def copy_glyphs(self, sourceFontStart, symbolFont, symbolFontStart, symbolFontEnd, exactEncoding, scaleGlyph, setName, attributes):
         """ Copies symbol glyphs into self.sourceFont """
         progressText = ''
         careful = False
         glyphSetLength = 0
+        sourceFontCounter = 0
 
         if self.args.careful:
             careful = True
 
-        if exactEncoding is False:
-            sourceFontList = list(range(sourceFontStart, sourceFontEnd + 1))
-            sourceFontCounter = 0
-
         # Create glyphs from symbol font
         #
         # If we are going to copy all Glyphs, then assume we want to be careful
@@ -974,8 +954,8 @@ class font_patcher:
                     possible_codes += [ v for v, s, r in sym_glyph.altuni if v > currentSourceFontGlyph ]
                 currentSourceFontGlyph = min(possible_codes)
             else:
-                # use source font defined hex values based on passed in start and end
+                # use source font defined hex values based on passed in start (fills gaps; symbols are packed)
-                currentSourceFontGlyph = sourceFontList[sourceFontCounter]
+                currentSourceFontGlyph = sourceFontStart + sourceFontCounter
                 sourceFontCounter += 1
 
             if self.args.quiet is False:
@@ -1292,19 +1272,153 @@ def check_fontforge_min_version():
         sys.stderr.write("{}: Please use at least version: {}\n".format(projectName, minimumVersion))
         sys.exit(1)
 
+def setup_arguments():
+    parser = argparse.ArgumentParser(
+        description=(
+            'Nerd Fonts Font Patcher: patches a given font with programming and development related glyphs\n\n'
+            '* Website: https://www.nerdfonts.com\n'
+            '* Version: ' + version + '\n'
+            '* Development Website: https://github.com/ryanoasis/nerd-fonts\n'
+            '* Changelog: https://github.com/ryanoasis/nerd-fonts/blob/master/changelog.md'),
+        formatter_class=RawTextHelpFormatter
+    )
+
+    # optional arguments
+    parser.add_argument('font',                                      help='The path to the font to patch (e.g., Inconsolata.otf)')
+    parser.add_argument('-v', '--version',                           action='version',        version=projectName + ": %(prog)s (" + version + ")")
+    parser.add_argument('-s', '--mono', '--use-single-width-glyphs', dest='single',           default=False, action='count',      help='Whether to generate the glyphs as single-width not double-width (default is double-width)')
+    parser.add_argument('-l', '--adjust-line-height',                dest='adjustLineHeight', default=False, action='store_true', help='Whether to adjust line heights (attempt to center powerline separators more evenly)')
+    parser.add_argument('-q', '--quiet', '--shutup',                 dest='quiet',            default=False, action='store_true', help='Do not generate verbose output')
+    parser.add_argument('-w', '--windows',                           dest='windows',          default=False, action='store_true', help='Limit the internal font name to 31 characters (for Windows compatibility)')
+    parser.add_argument('-c', '--complete',                          dest='complete',         default=False, action='store_true', help='Add all available Glyphs')
+    parser.add_argument('--careful',                                 dest='careful',          default=False, action='store_true', help='Do not overwrite existing glyphs if detected')
+    parser.add_argument('--removeligs', '--removeligatures',         dest='removeligatures',  default=False, action='store_true', help='Removes ligatures specificed in JSON configuration file')
+    parser.add_argument('--postprocess',                             dest='postprocess',      default=False, type=str, nargs='?', help='Specify a Script for Post Processing')
+    parser.add_argument('--configfile',                              dest='configfile',       default=False, type=str, nargs='?', help='Specify a file path for JSON configuration file (see sample: src/config.sample.json)')
+    parser.add_argument('--custom',                                  dest='custom',           default=False, type=str, nargs='?', help='Specify a custom symbol font. All new glyphs will be copied, with no scaling applied.')
+    parser.add_argument('-ext', '--extension',                       dest='extension',        default="",    type=str, nargs='?', help='Change font file type to create (e.g., ttf, otf)')
+    parser.add_argument('-out', '--outputdir',                       dest='outputdir',        default=".",   type=str, nargs='?', help='The directory to output the patched font file to')
+    parser.add_argument('--glyphdir',                                dest='glyphdir',         default=__dir__ + "/src/glyphs/", type=str, nargs='?', help='Path to glyphs to be used for patching')
+    parser.add_argument('--makegroups',                              dest='makegroups',       default=False, action='store_true', help='Use alternative method to name patched fonts (experimental)')
+    parser.add_argument('--variable-width-glyphs',                   dest='nonmono',          default=False, action='store_true', help='Do not adjust advance width (no "overhang")')
+
+    # progress bar arguments - https://stackoverflow.com/questions/15008758/parsing-boolean-values-with-argparse
+    progressbars_group_parser = parser.add_mutually_exclusive_group(required=False)
+    progressbars_group_parser.add_argument('--progressbars',         dest='progressbars',     action='store_true',                help='Show percentage completion progress bars per Glyph Set')
+    progressbars_group_parser.add_argument('--no-progressbars',      dest='progressbars',     action='store_false',               help='Don\'t show percentage completion progress bars per Glyph Set')
+    parser.set_defaults(progressbars=True)
+    parser.add_argument('--also-windows',                            dest='alsowindows',      default=False, action='store_true', help='Create two fonts, the normal and the --windows version')
+
+    # symbol fonts to include arguments
+    sym_font_group = parser.add_argument_group('Symbol Fonts')
+    sym_font_group.add_argument('--fontawesome',                                dest='fontawesome',          default=False, action='store_true', help='Add Font Awesome Glyphs (http://fontawesome.io/)')
+    sym_font_group.add_argument('--fontawesomeextension',                       dest='fontawesomeextension', default=False, action='store_true', help='Add Font Awesome Extension Glyphs (https://andrelzgava.github.io/font-awesome-extension/)')
+    sym_font_group.add_argument('--fontlogos', '--fontlinux',                   dest='fontlogos',            default=False, action='store_true', help='Add Font Logos Glyphs (https://github.com/Lukas-W/font-logos)')
+    sym_font_group.add_argument('--octicons',                                   dest='octicons',             default=False, action='store_true', help='Add Octicons Glyphs (https://octicons.github.com)')
+    sym_font_group.add_argument('--codicons',                                   dest='codicons',             default=False, action='store_true', help='Add Codicons Glyphs (https://github.com/microsoft/vscode-codicons)')
+    sym_font_group.add_argument('--powersymbols',                               dest='powersymbols',         default=False, action='store_true', help='Add IEC Power Symbols (https://unicodepowersymbol.com/)')
+    sym_font_group.add_argument('--pomicons',                                   dest='pomicons',             default=False, action='store_true', help='Add Pomicon Glyphs (https://github.com/gabrielelana/pomicons)')
+    sym_font_group.add_argument('--powerline',                                  dest='powerline',            default=False, action='store_true', help='Add Powerline Glyphs')
+    sym_font_group.add_argument('--powerlineextra',                             dest='powerlineextra',       default=False, action='store_true', help='Add Powerline Glyphs (https://github.com/ryanoasis/powerline-extra-symbols)')
+    sym_font_group.add_argument('--material', '--materialdesignicons', '--mdi', dest='material',             default=False, action='store_true', help='Add Material Design Icons (https://github.com/templarian/MaterialDesign)')
+    sym_font_group.add_argument('--weather', '--weathericons',                  dest='weather',              default=False, action='store_true', help='Add Weather Icons (https://github.com/erikflowers/weather-icons)')
+
+    args = parser.parse_args()
+
+    if args.makegroups and not FontnameParserOK:
+        sys.exit(projectName + ": FontnameParser module missing (bin/scripts/name_parser/Fontname*), can not --makegroups".format(projectName))
+
+    # if you add a new font, set it to True here inside the if condition
+    if args.complete:
+        args.fontawesome = True
+        args.fontawesomeextension = True
+        args.fontlogos = True
+        args.octicons = True
+        args.codicons = True
+        args.powersymbols = True
+        args.pomicons = True
+        args.powerline = True
+        args.powerlineextra = True
+        args.material = True
+        args.weather = True
+
+    if not args.complete:
+        sym_font_args = []
+        # add the list of arguments for each symbol font to the list sym_font_args
+        for action in sym_font_group._group_actions:
+            sym_font_args.append(action.__dict__['option_strings'])
+
+        # determine whether or not all symbol fonts are to be used
+        font_complete = True
+        for sym_font_arg_aliases in sym_font_args:
+            found = False
+            for alias in sym_font_arg_aliases:
+                if alias in sys.argv:
+                    found = True
+            if found is not True:
+                font_complete = False
+        args.complete = font_complete
+
+    if args.alsowindows:
+        args.windows = False
+
+    if args.nonmono and args.single:
+        print("Warniung: Specified contradicting --variable-width-glyphs and --use-single-width-glyph. Ignoring --variable-width-glyphs.")
+        args.nonmono = False
+
+    make_sure_path_exists(args.outputdir)
+    if not os.path.isfile(args.font):
+        sys.exit("{}: Font file does not exist: {}".format(projectName, args.font))
+    if not os.access(args.font, os.R_OK):
+        sys.exit("{}: Can not open font file for reading: {}".format(projectName, args.font))
+    is_ttc = len(fontforge.fontsInFile(args.font)) > 1
+
+    if args.extension == "":
+        args.extension = os.path.splitext(args.font)[1]
+    else:
+        args.extension = '.' + args.extension
+    if re.match("\.ttc$", args.extension, re.IGNORECASE):
+        if not is_ttc:
+            sys.exit(projectName + ": Can not create True Type Collections from single font files")
+    else:
+        if is_ttc:
+            sys.exit(projectName + ": Can not create single font files from True Type Collections")
+
+    return args
+
 
 def main():
+    print("{} Patcher v{} ({}) executing".format(projectName, version, script_version))
     check_fontforge_min_version()
-    patcher = font_patcher()
+    args = setup_arguments()
-    patcher.patch()
+    patcher = font_patcher(args)
+
+    sourceFonts = []
+    all_fonts = fontforge.fontsInFile(args.font)
+    for i, subfont in enumerate(all_fonts):
+        print("\n{}: Processing {} ({}/{})".format(projectName, subfont, i + 1, len(all_fonts)))
+        try:
+            sourceFonts.append(fontforge.open("{}({})".format(args.font, subfont), 1)) # 1 = ("fstypepermitted",))
+        except Exception:
+            sys.exit("{}: Can not open font '{}', try to open with fontforge interactively to get more information".format(
+                projectName, subfont))
+
+        patcher.patch(sourceFonts[-1])
+
     print("\nDone with Patch Sets, generating font...\n")
-    patcher.setup_font_names()
+    for f in sourceFonts:
-    patcher.generate()
+        patcher.setup_font_names(f)
+    patcher.generate(sourceFonts)
+
     # This mainly helps to improve CI runtime
     if patcher.args.alsowindows:
         patcher.args.windows = True
-        patcher.setup_font_names()
+        for f in sourceFonts:
-        patcher.generate()
+            patcher.setup_font_names(f)
+        patcher.generate(sourceFonts)
+
+    for f in sourceFonts:
+        f.close()
 
 
 if __name__ == "__main__":