fix: warn user if incompatible shell

.gitignore

@@ -1,2 +1,4 @@
+.task.cfg.dev.mk
 .task.mk
 env/
+

Makefile

@@ -64,7 +64,7 @@ info: ## demonstrate usage of tprint
 task.mk: $(TEMPLATES) generate.py
 	./generate.py $(VERSION) > task.mk
 
--include .task.cfg.mk .task.mk 
+-include .task.cfg.dev.mk .task.cfg.mk .task.mk 
 .task.mk: $(TEMPLATES) generate.py
 	$(call msg,re-jinjaing the local {a.b_cyan}.task.mk{a.end})
 	@./generate.py $(VERSION) > .task.mk || (echo "generator failed!!" && rm .task.mk)

src/builtins.mk

@@ -27,9 +27,9 @@ tconfirm = $(call py,confirm_py,$(1))
 .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
+# ifndef INHERIT_SHELL
-SHELL := $(shell which bash)
+# SHELL := $(shell which bash)
-endif
+# endif
 ifdef PHONIFY
 $(shell $(call py-verbose,phonify_py))
 endif

src/parsers.py

@@ -52,14 +52,14 @@ def parse_help(file, hidden=False):
                 and str(match.groupdict().get("goal")).startswith("_")
             ):
                 pass
-            elif not any(match.groupdict().get(k) for k in ('msg','msgargs')):
+            elif not any(match.groupdict().get(k) for k in ("msg", "msgargs")):
                 pass
             else:
                 yield {k: v for k, v in match.groupdict().items() if v is not None}
 
 
 def parseargs(argstring):
-    parser = argparse.ArgumentParser()
+    parser = argparse.ArgumentParser(add_help=False)
     parser.add_argument("--align")
     parser.add_argument("-d", "--divider", action="store_true")
     parser.add_argument("-ws", "--whitespace", action="store_true")

src/runners.mk

@@ -1,5 +1,13 @@
 # ---- [python/bash script runner] ---- #
 ###-- modified from https://unix.stackexchange.com/a/223093 -###
+###- 
+# possible posix process substitions solution:
+# https://unix.stackexchange.com/a/639752 
+# -### 
+SHELL_CHECK ?= $(shell /bin/sh --version | grep 'bash|zsh|ksh')
+ifndef SHELL_CHECK
+$(error task.mk requires a process substition compatible shell)
+endif
 define _newline
 
 

src/utils.py

@@ -6,13 +6,15 @@ import re
 import sys
 from dataclasses import dataclass
 
+
 def strip_ansi(txt):
     """
     Removes ANSI escape codes, as defined by ECMA-048 in
     http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf
     """
-    pattern = re.compile(r'\x1B\[\d+(;\d+){0,2}m')
+    pattern = re.compile(r"\x1B\[\d+(;\d+){0,2}m")
-    return pattern.sub('', txt)
+    return pattern.sub("", txt)
+
 
 @dataclass
 class Config:
@@ -131,4 +133,5 @@ a = ansi = Ansi()
 cfg = Config(
     "$(DIVIDER)", f"""$(HELP_SEP)""", f"""$(EPILOG)""", f"""$(USAGE)""", int("$(WRAP)")
 )
+
 #% endblock %#

task.mk

@@ -1,7 +1,7 @@
 # }> [github.com/daylinmorgan/task.mk] <{ #
 # Copyright (c) 2022 Daylin Morgan
 # MIT License
-TASKMK_VERSION ?= v23.1.1-5-g9ee6d34-dev
+TASKMK_VERSION ?= v23.1.1-7-gb411303-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.
 # You can update your .task.mk with `make _update-task.mk`
@@ -219,8 +219,8 @@ def strip_ansi(txt):
     Removes ANSI escape codes, as defined by ECMA-048 in
     http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf
     """
-    pattern = re.compile(r'\x1B\[\d+(;\d+){0,2}m')
+    pattern = re.compile(r"\x1B\[\d+(;\d+){0,2}m")
-    return pattern.sub('', txt)
+    return pattern.sub("", txt)
 @dataclass
 class Config:
     div: str
@@ -373,12 +373,12 @@ def parse_help(file, hidden=False):
                 and str(match.groupdict().get("goal")).startswith("_")
             ):
                 pass
-            elif not any(match.groupdict().get(k) for k in ('msg','msgargs')):
+            elif not any(match.groupdict().get(k) for k in ("msg", "msgargs")):
                 pass
             else:
                 yield {k: v for k, v in match.groupdict().items() if v is not None}
 def parseargs(argstring):
-    parser = argparse.ArgumentParser()
+    parser = argparse.ArgumentParser(add_help=False)
     parser.add_argument("--align")
     parser.add_argument("-d", "--divider", action="store_true")
     parser.add_argument("-ws", "--whitespace", action="store_true")
@@ -389,6 +389,11 @@ def parseargs(argstring):
     return parser.parse_args(argstring.split())
 endef
 # ---- [python/bash script runner] ---- #
+ 
+SHELL_CHECK ?= $(shell /bin/sh --version | grep 'bash|zsh|ksh')
+ifndef SHELL_CHECK
+$(error task.mk requires a process substition compatible shell)
+endif
 define _newline
 
 
@@ -440,9 +445,9 @@ tconfirm = $(call py,confirm_py,$(1))
 .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
+# ifndef INHERIT_SHELL
-SHELL := $(shell which bash)
+# SHELL := $(shell which bash)
-endif
+# endif
 ifdef PHONIFY
 $(shell $(call py-verbose,phonify_py))
 endif