Add regress tests for OSC 133 reflow and history loss.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-16 00:14:23 +00:00 · 2026-10-08 21:10:16 +02:00
parent b4810e5b2d
commit 1e677d8acd
2 changed files with 287 additions and 0 deletions
--- a/regress/output-history-loss.sh
+++ b/regress/output-history-loss.sh
@@ -0,0 +1,115 @@
+#!/bin/sh
+
+. ./input-common.inc
+
+check_output()
+{
+	name=$1
+	search=$2
+
+	for position in inside after; do
+		for keys in emacs vi; do
+			$TMUX set-option -w -t "$name:" mode-keys "$keys" ||
+			    exit 1
+			$TMUX copy-mode -t "$name:" || exit 1
+			if [ "$position" = inside ]; then
+				$TMUX send-keys -t "$name:" -X search-backward \
+				    "$search" || exit 1
+			fi
+			$TMUX set-buffer sentinel || exit 1
+			$TMUX send-keys -t "$name:" -X copy-output || exit 1
+			$TMUX save-buffer "$TMP" || exit 1
+			cmp "$TMP" "$EXP" ||
+			    fail "$name $position $keys output"
+
+			$TMUX send-keys -t "$name:" -X select-output || exit 1
+			present=$($TMUX display-message -p -t "$name:" \
+			    '#{selection_present}')
+			if [ "$present" != 1 ]; then
+				echo "FAIL: $name $position $keys no selection"
+				exit_status=1
+			fi
+			$TMUX set-buffer sentinel || exit 1
+			$TMUX send-keys -t "$name:" -X copy-selection || exit 1
+			$TMUX save-buffer "$TMP" || exit 1
+			cmp "$TMP" "$EXP" ||
+			    fail "$name $position $keys selection"
+			$TMUX send-keys -t "$name:" -X cancel || exit 1
+		done
+	done
+}
+
+# A multiline command evicts its prompt before producing output.
+command='\033]133;A\007p>\033]133;B\007echo\n'
+i=0
+while [ "$i" -lt 30 ]; do
+	command="${command}continued command\n"
+	i=$((i + 1))
+done
+OUTPUT=$(printf 'one\ntwo')
+
+for state in complete unfinished next-prompt; do
+	seq="${command}zz\033]133;C\007one\ntwo"
+	case "$state" in
+	complete|next-prompt)
+		seq="${seq}\033]133;D;0\007separator"
+		;;
+	esac
+	if [ "$state" = next-prompt ]; then
+		seq="${seq}\n\033]133;A\007p>\033]133;B\007"
+	fi
+	start_pane_hlimit lost 40 5 "$seq" 3
+	check_raw_matches lost 'START_OUTPUT.*osc133=0,0,2,0,0'
+	if [ "$state" != next-prompt ]; then
+		check_raw_no_matches lost 'START_PROMPT'
+	fi
+	if [ "$state" != unfinished ]; then
+		check_raw_matches lost 'END_OUTPUT.*osc133=0,0,0,3,0'
+	fi
+
+	printf '%s' "$OUTPUT" >"$EXP"
+	check_output lost one
+done
+
+# A long output evicts both A and C but leaves D.
+output='\033]133;A\007p>\033]133;B\007echo\n\033]133;C\007'
+i=0
+while [ "$i" -lt 30 ]; do
+	output="${output}$(printf 'row%02d' "$i")\n"
+	i=$((i + 1))
+done
+for state in complete next-prompt same-line-prompt; do
+	seq="${output}\033]133;D;0\007separator"
+	if [ "$state" != complete ]; then
+		if [ "$state" = next-prompt ]; then
+			seq="${seq}\n"
+		fi
+		seq="${seq}\033]133;A\007p>\033]133;B\007"
+	fi
+	start_pane_hlimit clipped 40 6 "$seq" 3
+	check_raw_no_matches clipped 'START_OUTPUT'
+	if [ "$state" = complete ]; then
+		check_raw_no_matches clipped 'START_PROMPT'
+	fi
+	check_raw_matches clipped 'END_OUTPUT'
+	$TMUX capture-pane -p -t clipped: -S - |
+	    sed '/^separator/,$d' >"$EXP"
+	check_output clipped row29
+done
+
+# Retained command text does not belong to a later prompt's output.
+for newline in '' '\n'; do
+	seq="${command}\033]133;A\007p>\033]133;B\007echo${newline}"
+	seq="${seq}\033]133;C\007later\033]133;D;0\007"
+	start_pane_hlimit later 40 5 "$seq" 3
+	$TMUX copy-mode -t later: || exit 1
+	$TMUX send-keys -t later: -X history-top || exit 1
+	$TMUX set-buffer sentinel || exit 1
+	$TMUX send-keys -t later: -X copy-output || exit 1
+	[ "$($TMUX show-buffer)" = sentinel ] || exit 1
+	$TMUX send-keys -t later: -X select-output || exit 1
+	[ "$($TMUX display-message -p -t later: '#{selection_present}')" = 0 ] ||
+	    exit 1
+done
+
+exit $exit_status