patch 9.1.1306: completion menu rendering can be improved

Commit: 
https://github.com/vim/vim/commit/32f2bb6e1e672f52d736579d9752473b14a5744d
Author: glepnir <glephun...@gmail.com>
Date:   Tue Apr 15 19:06:58 2025 +0200

    patch 9.1.1306: completion menu rendering can be improved
    
    Problem:  Parts of the popup menu were rendered twice when the popup was
              at maximum width because the truncation flag was being set too
              liberally.
    Solution: Make the truncation condition more precise by only setting it
              when there's exactly one character of space remaining
              (glepnir).
    
    closes: #17108
    
    Signed-off-by: glepnir <glephun...@gmail.com>
    Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/popupmenu.c b/src/popupmenu.c
index 07c99f052..38ab24bce 100644
--- a/src/popupmenu.c
+++ b/src/popupmenu.c
@@ -691,6 +691,10 @@ pum_redraw(void)
            width = 0;
            s = NULL;
            p = pum_get_item(idx, item_type);
+
+           if (j + 1 < 3)
+               next_isempty = pum_get_item(idx, order[j + 1]) == NULL;
+
            if (p != NULL)
                for ( ; ; MB_PTR_ADV(p))
                {
@@ -731,15 +735,13 @@ pum_redraw(void)
                                int         cells;
                                int         over_cell = 0;
                                int         truncated = FALSE;
+                               int         pad = next_isempty ? 0 : 2;
 
                                cells = mb_string2cells(rt , -1);
                                truncated = pum_width == p_pmw
-                                               && pum_width - totwidth < cells;
-
-                               if (pum_width == p_pmw && !truncated
-                                       && (j + 1 < 3 && pum_get_item(idx, 
order[j + 1]) != NULL))
-                                   truncated = TRUE;
+                                           && pum_width - totwidth < cells + 
pad;
 
+                               // only draw the text that fits
                                if (cells > pum_width)
                                {
                                    do
@@ -816,12 +818,9 @@ pum_redraw(void)
                            int         cells = (*mb_string2cells)(st, size);
                            char_u      *st_end = NULL;
                            int         over_cell = 0;
+                           int         pad = next_isempty ? 0 : 2;
                            int         truncated = pum_width == p_pmw
-                                               && pum_width - totwidth < cells;
-
-                           if (pum_width == p_pmw && !truncated
-                                   && (j + 1 < 3 && pum_get_item(idx, order[j 
+ 1]) != NULL))
-                               truncated = TRUE;
+                                           && pum_width - totwidth < cells + 
pad;
 
                            // only draw the text that fits
                            while (size > 0
@@ -910,9 +909,6 @@ pum_redraw(void)
            else
                n = order[j] == CPT_ABBR ? 1 : 0;
 
-           if (j + 1 < 3)
-               next_isempty = pum_get_item(idx, order[j + 1]) == NULL;
-
            // Stop when there is nothing more to display.
            if (j == 2
                    || (next_isempty && (j == 1 || (j == 0
diff --git a/src/version.c b/src/version.c
index 7bd2bb6b7..166c76da6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1306,
 /**/
     1305,
 /**/

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