patch 8.0.0250: virtcol() does not work well for multi-byte characters
Problem: When virtcol() gets a column that is not the first byte of a
multi-byte character the result is unpredictable. (Christian
Ludwig)
Solution: Correct the column to the first byte of a multi-byte character.
Change the utf-8 test to new style.
diff --git a/src/charset.c b/src/charset.c
index c047afe..e766fa5 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -1296,7 +1296,14 @@
if (pos->col == MAXCOL)
posptr = NULL; /* continue until the NUL */
else
+ {
posptr = ptr + pos->col;
+#ifdef FEAT_MBYTE
+ if (has_mbyte)
+ /* always start on the first byte */
+ posptr -= (*mb_head_off)(line, posptr);
+#endif
+ }
/*
* This function is used very often, do some speed optimizations.