fix(signcol): handle edge case with maximum value

50250542 failed to consider that the maximum passed to buf_signcols
is window scoped whereas the signcols value is buffer scoped. This can
lead to a bug where the signcolumn becomes incorrect if:
- global signcolumn is set to auto:N
- signcolumn in a window is changed locally to auto:M where M > N
- the buffer has a line with M or greater signs.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/nvim/option.c b/src/nvim/option.c
index d97a22c342..4ec6ee3148 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -8165,7 +8165,7 @@ int win_signcol_configured(win_T *wp, int *is_fixed)
   }
 
   int needed_signcols = buf_signcols(wp->w_buffer, maximum);
-  int ret = MAX(minimum, needed_signcols);
+  int ret = MAX(minimum, MIN(maximum, needed_signcols));
   assert(ret <= SIGN_SHOW_MAX);
   return ret;
 }