percent units are also optional in hwb

Author: koen-at-peppered

lib/util.py

@@ -29,8 +29,8 @@
     )\s*\)) |
     \b(?P<hsl>hsl\(\s*(?P<hsl_content>%(deg)s\s*(,\s*)?%(percent_opt)s\s*(,\s*)?%(percent_opt)s)\s*\)) |
     \b(?P<hsla>hsla\(\s*(?P<hsla_content>%(deg)s\s*(,\s*)?(?:%(percent_opt)s\s*(,\s*)?){2}(?:%(percent)s|%(float)s))\s*\)) |
-    \b(?P<hwb>hwb\(\s*(?P<hwb_content>%(deg)s\s*(,\s*)?%(percent)s\s*(,\s*)?%(percent)s)\s*\)) |
-    \b(?P<hwba>hwb\(\s*(?P<hwba_content>%(deg)s\s*(,\s*)?(?:%(percent)s\s*(,\s*)?){2}(?:%(percent)s|%(float)s))\s*\)) |
+    \b(?P<hwb>hwb\(\s*(?P<hwb_content>%(deg)s\s*(,\s*)?%(percent_opt)s\s*(,\s*)?%(percent_opt)s)\s*\)) |
+    \b(?P<hwba>hwb\(\s*(?P<hwba_content>%(deg)s\s*(,\s*)?(?:%(percent_opt)s\s*(,\s*)?){2}(?:%(percent_opt)s|%(float)s))\s*\)) |
     \b(?P<gray>gray\(\s*(?P<gray_content>%(float)s|%(percent)s)\s*\)) |
     \b(?P<graya>gray\(\s*(?P<graya_content>(?:%(float)s|%(percent)s)\s*(,\s*)?(?:%(percent)s|%(float)s))\s*\)) |
     \b(?P<pantone_code>((\d{2}-)?\d{3,5}\s|(black|blue|bright red|cool gray|dark blue|green|magenta|medium purple|orange|pink|process blue|purple|red|reflex blue|rhodamine red|rose gold|silver|violet|warm gray|warm red|yellow)\s(\d{1,5}\s)?|p\s\d{1,3}-\d{1,2}\s)[a-z]{1,3})\b |  # noqa: E501