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Reuse extended entry when clearing RGB cell, to prevent memory growth

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when cells are repeatedly cleared (they are only compacted when scrolled
off screen). From Michael K Darling in GitHub issue 4862.
This commit is contained in:
nicm
2026-02-17 07:42:58 +00:00
parent 55cedc24fa
commit fedd4440f0
1 changed files with 7 additions and 1 deletions
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8
grid.c
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@@ -205,11 +205,17 @@ grid_clear_cell(struct grid *gd, u_int px, u_int py, u_int bg)
struct grid_line *gl = &gd->linedata[py];
struct grid_cell_entry *gce = &gl->celldata[px];
struct grid_extd_entry *gee;
u_int old_offset = gce->offset;
int had_extd = (gce->flags & GRID_FLAG_EXTENDED);
memcpy(gce, &grid_cleared_entry, sizeof *gce);
if (bg != 8) {
if (bg & COLOUR_FLAG_RGB) {
grid_get_extended_cell(gl, gce, gce->flags);
if (had_extd && old_offset < gl->extdsize) {
gce->flags |= GRID_FLAG_EXTENDED;
gce->offset = old_offset;
} else
grid_get_extended_cell(gl, gce, gce->flags);
gee = grid_extended_cell(gl, gce, &grid_cleared_cell);
gee->bg = bg;
} else {