patch 9.0.0078: star register is unexpectedly changed when deleting
Problem: Star register is changed when deleting and both "unnamed" and
"unnamedplus" are in 'clipboard'.
Solution: Make the use of the star register work as documented. (Ernie Rael,
closes #10669)
diff --git a/src/register.c b/src/register.c
index 9a5e11b..836273f 100644
--- a/src/register.c
+++ b/src/register.c
@@ -1409,7 +1409,8 @@
# ifdef FEAT_X11
// If we were yanking to the '+' register, send result to selection.
// Also copy to the '*' register, in case auto-select is off. But not when
- // 'clipboard' has "unnamedplus" and not "unnamed".
+ // 'clipboard' has "unnamedplus" and not "unnamed"; and not when
+ // deleting and both "unnamedplus" and "unnamed".
if (clip_plus.available
&& (curr == &(y_regs[PLUS_REGISTER])
|| (!deleting && oap->regname == 0
@@ -1425,6 +1426,8 @@
if (!clip_isautosel_star()
&& !clip_isautosel_plus()
&& !((clip_unnamed | clip_unnamed_saved) == CLIP_UNNAMED_PLUS)
+ && !(deleting && (clip_unnamed | clip_unnamed_saved)
+ == (CLIP_UNNAMED | CLIP_UNNAMED_PLUS))
&& !did_star
&& curr == &(y_regs[PLUS_REGISTER]))
{