Fix vertical cursor motion with wide images and line numbers

* src/xdisp.c (produce_image_glyph): When cropping an image that
exceeds the window's right edge, account for the screen estate
taken by line-number display.  (Bug#77217)

1 files changed, 5 insertions, 3 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 4e8bb7d9b97..f2b158f00e3 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -31956,12 +31956,14 @@ produce_image_glyph (struct it *it)
      word-wrap, unless the image starts at column zero, because
      wrapping correctly needs the real pixel width of the image.  */
   if ((it->line_wrap != WORD_WRAP
-       || it->hpos == 0
+       || it->hpos == (0 + (it->lnum_width ? it->lnum_width + 2 : 0))
        /* Always crop images larger than the window-width, minus 1 space.  */
-       || it->pixel_width > it->last_visible_x - FRAME_COLUMN_WIDTH (it->f))
+       || it->pixel_width > (it->last_visible_x - it->lnum_pixel_width
+                             - FRAME_COLUMN_WIDTH (it->f)))
       && (crop = it->pixel_width - (it->last_visible_x - it->current_x),
           crop > 0)
-      && (it->hpos == 0 || it->pixel_width > it->last_visible_x / 4))
+      && (it->hpos == (0 + (it->lnum_width ? it->lnum_width + 2 : 0))
+          || it->pixel_width > it->last_visible_x / 4))
     {
       it->pixel_width -= crop;
       slice.width -= crop;