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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 Consolidate the image work through 250f96b4b onto the redraw-damage-rectangles-new base, excluding the superseded redraw implementation and its historical merges.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.
72 lines
2.7 KiB
Bash
72 lines
2.7 KiB
Bash
#!/bin/sh
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# Regression test for a fixed bug: on a client detected as SIXEL-capable, a
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# pane-content redraw (PANE_REDRAW) erased the image backend's rectangle
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# using the redrawing pane's raw nominal geometry (wp->xoff/yoff/sx/sy)
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# instead of the cells it actually owns in the current scene. When a
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# floating pane occluded part of that rectangle, the erase blanked the
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# floating pane's on-screen area, and since the subsequent text redraw
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# correctly only refills cells the redrawing pane owns, nothing repainted
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# it back in - the floating pane's content stayed blank.
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#
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# Fixed in screen-redraw.c:redraw_draw_pane_lines() by erasing only the
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# cell ranges the pane actually owns per line (its REDRAW_SPAN_PANE spans),
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# not its raw rectangle. See tmux-sixel-erase-ignores-occlusion.md and
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# IMAGE-REDRAW-DISCUSSION.md for the full write-up.
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#
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# Confirmed by direct A/B test against this exact sequence: reliably wipes
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# the floating pane's content on the unfixed code, reliably leaves it
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# intact on the fixed code.
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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 -Lifcw$$ -f/dev/null"
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TMUX2="$TEST_TMUX -Lifcw-inner$$ -f/dev/null"
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$TMUX kill-server 2>/dev/null
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$TMUX2 kill-server 2>/dev/null
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TMP=$(mktemp)
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trap "$TMUX kill-server 2>/dev/null; $TMUX2 kill-server 2>/dev/null; rm -f $TMP" 0 1 15
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$TMUX2 new-session -d -x 60 -y 20 "sh -c 'i=0; while [ \$i -lt 30 ]; do printf \"TILE%02d\\n\" \$i; i=\$((i + 1)); done; exec sleep 100'" \
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|| exit 1
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$TMUX2 new-pane -x20 -y6 -X8 -Y3 -T FLOATTITLE "sh -c 'printf FLOATCONTENT; exec sleep 100'" \
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|| exit 1
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[ "$($TMUX2 display-message -p '#{image_support}')" = 0 ] && exit 0
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# The attaching client must be detected as SIXEL-capable - this bug does
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# not reproduce on a fallback or Kitty client.
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$TMUX2 set -as terminal-features ',*:sixel' || exit 1
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$TMUX new-session -d -x 60 -y 20 || exit 1
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$TMUX send-keys -l "$TMUX2 attach-session" || exit 1
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$TMUX send-keys Enter || exit 1
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sleep 1
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# Sanity check: the floating pane's content is visible before anything
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# disturbs it.
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$TMUX capturep -p >$TMP || exit 1
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grep -q 'FLOATCONTENT' $TMP || exit 1
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# Click the tiled pane (making it active), enter copy-mode scrolled up
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# (matching a PageUp binding), move up one line (matching an Up binding),
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# then exit copy-mode - the exit is what triggers window_pane_reset_mode(),
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# which is what actually caused the erase.
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$TMUX2 select-pane -t%0 || exit 1
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sleep 1
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$TMUX2 copy-mode -u -t%0 || exit 1
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sleep 1
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$TMUX2 send-keys -t%0 -X cursor-up || exit 1
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sleep 1
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$TMUX2 send-keys -t%0 -X cancel || exit 1
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sleep 1
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$TMUX capturep -p >$TMP || exit 1
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grep -q 'FLOATCONTENT' $TMP || exit 1
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exit 0
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