[LyX/master] Fix prefs2prefs for \\set_color

[Juergen Spitzmueller]

commit 2ac48f2c5b4619cfc1be11a8769c3af4f86b5dbc
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue Dec 15 09:15:23 2020 +0100

    Fix prefs2prefs for \\set_color
---
 lib/scripts/prefs2prefs_prefs.py |   12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/lib/scripts/prefs2prefs_prefs.py b/lib/scripts/prefs2prefs_prefs.py
index 88b0041..61c93d0 100644
--- a/lib/scripts/prefs2prefs_prefs.py
+++ b/lib/scripts/prefs2prefs_prefs.py
@@ -455,6 +455,16 @@ def rename_cyrillic_kmap_files(line):
 	line = line.replace('"koi8-u"', '"ukrainian"')
 	return (True, line)
 
+def add_dark_color(line):
+	if not line.lower().startswith("\\set_color "):
+		return no_match
+	colre = re.compile(r'^\\set_color\s+(.*)\s+(.*)"', re.IGNORECASE)
+	m = colre.match(line)
+	if not m:
+		return no_match
+	line += " " + m.group(2) + '"'
+	return (True, line)
+
 # End conversions for LyX 2.3 to 2.4
 ####################################
 
@@ -504,5 +514,5 @@ conversions = [
 	[ 32, []],
 	[ 33, []],
 	[ 34, [rename_cyrillic_kmap_files]],
-	[ 35, []]
+	[ 35, [add_dark_color]]
 ]