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Implement generalised image support
Support Kitty and SIXEL input and output with grid-resident image layers, history and copy-mode integration, text fallback rendering, and damage-rectangle redraws. Consolidate the image work through 250f96b4b onto the redraw-damage-rectangles-new base, excluding the superseded redraw implementation and its historical merges. The original history is preserved in backup/4902-image-support-before-master-rebase-20261003.
This commit is contained in:
Michael Grant
151
regress/image-border-status-wipe.sh
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151
regress/image-border-status-wipe.sh
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#!/bin/sh
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# Regression test for a border-status caching bug: window_make_pane_status()
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# (window-border.c) gates the physical redraw of a pane's border-status
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# title on a logical content diff (grid_compare against a cached copy), not
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# on whether the physical screen cells were disturbed by something else in
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# the meantime - such as a floating pane's own border, drawn on top of a
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# tiled pane's border-status row, sliding across it and then away again.
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# See tmux-image-redraw-known-bugs.md ("border-status text cache ignores
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# physical damage") for the full write-up.
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#
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# Reproduction: a tiled pane with pane-border-status on has a floating pane
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# dragged, by mouse, from directly over its border-status row to somewhere
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# else. The tiled pane's title should reappear once the floating pane has
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# moved off it; without the fix it stays blank.
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#
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# The drag starts and ends away from row 0 rather than grabbing the
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# floating pane's border while it is already sitting on row 0: when a
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# floating pane's own border-status row exactly coincides with the tiled
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# pane's row 0, mouse hit-testing on that row attributes clicks to the
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# tiled pane, not the floating one on top of it (an unrelated tmux quirk,
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# not what this test is about). That only matters for the initial press,
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# though - once a drag is under way, further motion events go straight to
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# the already-bound per-pane callback without re-resolving which pane owns
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# the coordinates, so starting the grab on an unambiguous row and dragging
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# through row 0 works fine.
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PATH=/bin:/usr/bin
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TERM=screen
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LC_ALL=C.UTF-8
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export TERM LC_ALL
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[ -z "$TEST_TMUX" ] && TEST_TMUX=$(readlink -f ../tmux)
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TMUX="$TEST_TMUX -LtestA$$ -f/dev/null"
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TMUX2="$TEST_TMUX -LtestB$$ -f/dev/null"
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cleanup()
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{
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$TMUX kill-server >/dev/null 2>&1
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$TMUX2 kill-server >/dev/null 2>&1
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}
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fail()
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{
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echo "$*" >&2
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cleanup
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exit 1
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}
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# drag COL ROW [ROW ...]
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#
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# Write one continuous mouse-1 gesture at column COL: a press at the first
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# ROW, a drag update at each subsequent ROW in turn, and a release at the
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# last ROW - all 1-based positions sent to the outer pane holding the
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# inner client. This matches the default MouseDown1Border/MouseDrag1Border
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# bindings used to move or resize a floating pane by its border.
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#
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# This must be one continuous press/drag/.../release gesture, not several
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# separate drag() calls chained together: releasing clears the per-pane
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# drag callback binding, so a later press has to be re-hit-tested from
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# scratch, which only works reliably away from row 0 (see the header
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# comment). A drag already under way is not re-hit-tested per motion
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# event, so it can safely pass through row 0 as an intermediate waypoint.
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drag()
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{
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col="$1"
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shift
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row="$1"
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shift
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seq=$(printf '\033[<0;%s;%sM' "$col" "$row")
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$TMUX2 send-keys -t "$OUTER" -l "$seq" 2>/dev/null
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sleep 0.2
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while [ $# -gt 1 ]; do
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row="$1"
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shift
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seq=$(printf '\033[<32;%s;%sM' "$col" "$row")
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$TMUX2 send-keys -t "$OUTER" -l "$seq" 2>/dev/null
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sleep 0.15
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done
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row="$1"
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seq=$(printf '\033[<0;%s;%sm' "$col" "$row")
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$TMUX2 send-keys -t "$OUTER" -l "$seq" 2>/dev/null
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sleep 1
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}
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cleanup
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TMP=$(mktemp)
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trap "cleanup; rm -f $TMP" 0 1 15
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$TMUX new-session -d -s inner -x 60 -y 20 'sh -c "sleep 100"' || exit 1
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$TMUX set -g mouse on
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$TMUX set -g pane-border-status top
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$TMUX set -g default-command 'sh -c "sleep 100"'
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BASE=$($TMUX list-panes -F '#{pane_id}' | head -1)
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[ -n "$BASE" ] || fail "No base pane."
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$TMUX select-pane -t "$BASE" -T TILEDTITLE || fail "set base title failed"
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# Float a pane well clear of row 0 to start - its own top border must not
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# coincide with the base pane's border-status row for the initial mouse
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# press to unambiguously hit it (see the header comment). -x/-y are the
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# pane's outer size including its 2-cell border frame, so request 2 more
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# than the desired 14x3 content area (see layout_floating_args_parse()).
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FLOAT=$($TMUX new-pane -d -PF '#{pane_id}' -x 16 -y 5 -X 5 -Y 5 -T FLOATTITLE) ||
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fail "new-pane -X -Y failed"
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FTOP=$($TMUX display-message -p -t "$FLOAT" '#{pane_top}')
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FLEFT=$($TMUX display-message -p -t "$FLOAT" '#{pane_left}')
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FWIDTH=$($TMUX display-message -p -t "$FLOAT" '#{pane_width}')
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$TMUX2 new-session -d -x 60 -y 20 "$TMUX attach -t inner" || exit 1
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sleep 1
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OUTER=$($TMUX2 list-panes -F '#{pane_id}' | head -1)
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[ -n "$OUTER" ] || fail "No outer pane."
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# Sanity check: the base pane's title is visible now (the float starts
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# well clear of row 0).
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$TMUX2 capturep -p -t "$OUTER" >$TMP || fail "capture failed"
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head -1 $TMP | grep -q TILEDTITLE ||
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fail "base title not visible before the drag - test setup is wrong"
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# Drag the float up by its top border (an unambiguous row - not row 0) so
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# it ends up covering row 0, hiding the base pane's title behind its own
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# border, then continue the same drag back down again so it ends clear of
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# row 0 once more - one continuous gesture the whole way (see drag()'s
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# comment for why).
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GRABCOL=$((FLEFT + FWIDTH / 2))
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waypoints="$FTOP"
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row=$FTOP
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while [ "$row" != 1 ]; do
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row=$((row - 1))
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waypoints="$waypoints $row"
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done
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while [ "$row" != "$FTOP" ]; do
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row=$((row + 1))
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waypoints="$waypoints $row"
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done
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drag $((GRABCOL + 1)) $waypoints
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drag $((GRABCOL + 1)) 1 $((GRABCOL + 1)) "$FTOP"
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$TMUX2 capturep -p -t "$OUTER" >$TMP || fail "capture failed"
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# The base pane's title should be visible again now the floating pane has
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# moved off its border-status row. This is expected to fail before the fix
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# - see the header comment.
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head -1 $TMP | grep -q TILEDTITLE ||
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fail "base pane title still blank after floating pane moved away"
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exit 0
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