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/runtime/doc/diff.txt b/runtime/doc/diff.txt
index a66df1e..e5321c5 100644
--- a/runtime/doc/diff.txt
+++ b/runtime/doc/diff.txt
@@ -376,6 +376,9 @@
'diffopt' option. 'diffexpr' cannot change the value of 'lines' and
'columns'.
+The advantage of using a function call without arguments is that it is faster,
+see |expr-option-function|.
+
Example (this does almost the same as 'diffexpr' being empty): >
set diffexpr=MyDiff()
@@ -441,6 +444,9 @@
v:fname_diff patch file
v:fname_out resulting patched file
+The advantage of using a function call without arguments is that it is faster,
+see |expr-option-function|.
+
Example (this does the same as 'patchexpr' being empty): >
set patchexpr=MyPatch()