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cfd1b81dc7
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 Consolidate the image work through 250f96b4b onto the redraw-damage-rectangles-new base, excluding the superseded redraw implementation and its historical merges.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.
97 lines
3.4 KiB
Bash
Executable File
97 lines
3.4 KiB
Bash
Executable File
#!/bin/sh
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# Regression test for the imagescroll terminal-feature (tty-features.c),
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# SIXEL side - see image-kitty-region-scroll.sh for the Kitty side of the
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# same feature: scrolling a pane that has a SIXEL image in it must not
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# retransmit the image when the client's terminal has imagescroll - tmux
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# trusts the terminal to have moved the image along with the rest of the
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# scrolling region. Without imagescroll (the default for any terminal not
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# individually confirmed and added to tty-features.c's table), today's
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# always-redraw-on-scroll behaviour is unchanged.
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#
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# There is no way to query a terminal for whether it actually moves SIXEL
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# pixels along with a scroll, so this only proves tmux's own decision to
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# skip or redraw is wired correctly - not that any particular terminal
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# renders the result correctly. That needs a human, on real terminals.
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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 "$*" >&2
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cleanup
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exit 1
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}
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cleanup
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TMP=$(mktemp)
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trap "cleanup; rm -f $TMP" 0 1 15
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HEADER='\033Pq"1;1;26;26#0;2;100;100;100#0!26~-!26~-!26~-!26~-!26B\033\\'
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# A small image near the top of a tall pane, then enough plain output below
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# it to force several ordinary (no DECSTBM sub-region) linefeed scrolls,
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# each one shifting the image rows along with everything else.
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$TMUX new-session -d -s inner -x 40 -y 20 "printf '$HEADER'; exec sh" ||
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exit 1
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sleep 0.3
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[ "$($TMUX display-message -p '#{image_support}')" = 0 ] && exit 0
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$TMUX set -as terminal-features ',*:sixel' || exit 1
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$TMUX2 new-session -d -x 40 -y 20 || exit 1
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OUTER=$($TMUX2 list-panes -F '#{pane_id}' | head -1)
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[ -n "$OUTER" ] || fail "No outer pane."
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$TMUX2 set -as terminal-features ',*:sixel@' || fail "disable outer sixel failed"
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$TMUX2 pipe-pane -t "$OUTER" -O "cat >$TMP" || fail "pipe-pane failed"
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$TMUX2 send-keys -t "$OUTER" -l "$TMUX attach -t inner" || fail "send attach failed"
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$TMUX2 send-keys -t "$OUTER" Enter || fail "send enter failed"
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sleep 2
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grep -qa '"1;1;26;26' "$TMP" || fail "sanity: image never reached the client"
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# --- Phase 1: imagescroll granted - expect no DCS. ---
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$TMUX set -as terminal-features ',*:imagescroll' || fail "grant imagescroll failed"
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sleep 0.5
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: >"$TMP"
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$TMUX send-keys -t inner -l "yes | head -n 30" || fail "send scroll failed"
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$TMUX send-keys -t inner Enter || fail "send enter failed"
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sleep 1
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n_on=$(grep -ac "$(printf '\033P')" "$TMP")
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[ "$n_on" -eq 0 ] ||
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fail "image was retransmitted ($n_on times) scrolling with imagescroll granted"
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# --- Phase 2: imagescroll not granted (the default) - expect the image
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# back, then more scrolling to redraw it. ---
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$TMUX send-keys -t inner -l "printf '$HEADER'" || fail "resend image failed"
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$TMUX send-keys -t inner Enter || fail "send enter failed"
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sleep 1.5
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grep -qa '"1;1;26;26' "$TMP" || fail "sanity: image did not reappear before phase 2"
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$TMUX set -as terminal-features ',*:imagescroll@' || fail "revoke imagescroll failed"
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sleep 0.5
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: >"$TMP"
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$TMUX send-keys -t inner -l "yes | head -n 30" || fail "send scroll failed"
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$TMUX send-keys -t inner Enter || fail "send enter failed"
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sleep 1
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n_off=$(grep -ac "$(printf '\033P')" "$TMP")
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[ "$n_off" -gt 0 ] ||
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fail "image was not retransmitted scrolling without imagescroll - expected the default always-redraw behaviour"
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exit 0
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