Minor improvements as followup to recent RGB string-parsing change

* src/xfaces.c (Finternal_color_values_from_color_spec): Rename to...
(Fcolor_values_from_color_spec): ...this.  Callers changed.
Rename the argument to SPEC and improve the doc string.
(parse_color_spec, parse_float_color_comp, parse_hex_color_comp):
Improve commentary.
(parse_color_spec): Rename the argument S to SPEC.

* etc/NEWS: Mention 'color-values-from-color-spec'.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 6bfecd68139..d501c2ad872 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -624,6 +624,11 @@ In order for the two functions to behave more consistently,
 length, and also supports format specifications that include a
 truncating precision field, such as '%.2a'.
 
+---
+** New function 'color-values-from-color-spec'.
+This can be used to parse RGB color specs in several formats and
+convert them to a list (R G B) of primary color values.
+
 
 * Changes in Emacs 28.1 on Non-Free Operating Systems