patch 9.0.0634: evaluating "expr" options has more overhead than needed
Problem: Evaluating "expr" options has more overhead than needed.
Solution: Use call_simple_func() for 'foldtext', 'includeexpr', 'printexpr',
"expr" of 'spellsuggest', 'diffexpr', 'patchexpr', 'balloonexpr',
'formatexpr', 'indentexpr' and 'charconvert'.
diff --git a/src/regexp.c b/src/regexp.c
index 842c480..b15dc3a 100644
--- a/src/regexp.c
+++ b/src/regexp.c
@@ -2125,7 +2125,7 @@
// Execute instructions from ISN_SUBSTITUTE.
eval_result[nested] = exe_substitute_instr();
else
- eval_result[nested] = eval_to_string(source + 2, TRUE);
+ eval_result[nested] = eval_to_string(source + 2, TRUE, FALSE);
--nesting;
if (eval_result[nested] != NULL)