support other default sep char

src/hwylterm/hwylcli.nim

@@ -744,7 +744,7 @@ proc parse*(p: OptParser, target: var float) =
 proc parse*[T](p: var OptParser, target: var seq[T]) =
   checkVal p
   case p.sep
-  of ",=":
+  of ",=", ",:":
     let baseVal = p.val
     for v in baseVal.split(","):
       p.val = v.strip()
@@ -752,7 +752,7 @@ proc parse*[T](p: var OptParser, target: var seq[T]) =
       var parsed: T
       parse(p, parsed)
       target.add parsed
-  of "=", "":
+  of "=",":","":
    var parsed: T
    parse(p, parsed)
    target.add parsed

tests/example.nim

@@ -72,16 +72,16 @@ hwylCli:
     flags:
       ^something
       thing:
-        T KV[string, Color]
-        ? "some key value string"
+        T seq[KV[string, Color]]
+        ? "some key value colors"
       b:
         T seq[float]
         ? "multiple floats"
-      h "this will override the builtin 'h' for help"
       def:
+        T string
         ? "a flag with a string default"
         * "the value"
     run:
       echo "hello from `example b` command"
-      echo fmt"{thing=}, {b=}, {h=}, {def=}"
+      echo fmt"{thing=}, {b=}, {def=}"