patch 9.0.1578: SpellCap highlight not always updated when needed
Problem: SpellCap highlight not always updated when needed.
Solution: Handle updating line below closed fold and other situations where
only part of the window is redrawn. (Luuk van Baal, closes #12428,
closes #12420)
diff --git a/src/drawline.c b/src/drawline.c
index e5fa15c..3791ece 100644
--- a/src/drawline.c
+++ b/src/drawline.c
@@ -1062,7 +1062,7 @@
linenr_T lnum,
int startrow,
int endrow,
- int nochange UNUSED, // not updating for changed text
+ int mod_top UNUSED, // top line updated for changed text
int number_only) // only update the number column
{
winlinevars_T wlv; // variables passed between functions
@@ -1314,11 +1314,18 @@
// When there was a sentence end in the previous line may require a
// word starting with capital in this line. In line 1 always check
- // the first word.
- if (lnum != capcol_lnum)
- cap_col = -1;
- if (lnum == 1)
+ // the first word. Also check for sentence end in the line above
+ // when updating the first row in a window, the top line with
+ // changed text in a window, or if the previous line is folded.
+ if (lnum == 1
+ || ((startrow == 0 || mod_top == lnum
+#ifdef FEAT_FOLDING
+ || hasFoldingWin(wp, lnum - 1, NULL, NULL, TRUE, NULL)
+#endif
+ ) && check_need_cap(wp, lnum, 0)))
cap_col = 0;
+ else if (lnum != capcol_lnum)
+ cap_col = -1;
capcol_lnum = 0;
}
#endif
@@ -2787,7 +2794,7 @@
p = prev_ptr;
cap_col -= (int)(prev_ptr - line);
len = spell_check(wp, p, &spell_hlf, &cap_col,
- nochange);
+ mod_top == 0);
word_end = v + len;
// In Insert mode only highlight a word that