From 5cd43626ef66b9854625d860f3b68c0c47e362d3 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Fri, 17 Jul 2026 09:29:40 +0100
Subject: [PATCH] cmd_template_replace test.

---
 regress/cmd-template-replace.sh | 181 ++++++++++++++++++++++++++++++++
 1 file changed, 181 insertions(+)
 create mode 100644 regress/cmd-template-replace.sh

diff --git a/regress/cmd-template-replace.sh b/regress/cmd-template-replace.sh
new file mode 100644
index 000000000..00730abc3
--- /dev/null
+++ b/regress/cmd-template-replace.sh
@@ -0,0 +1,181 @@
+#!/bin/sh
+
+# Exercise cmd_template_replace through command-prompt, which passes prompt
+# input as argv to args_make_commands. This covers the quoting modes, indexed
+# replacements, and cases where replacements are intentionally not made.
+
+PATH=/bin:/usr/bin
+TERM=screen
+LC_ALL=C.UTF-8
+LANG=C.UTF-8
+export TERM LC_ALL LANG
+
+[ -z "$TEST_TMUX" ] && TEST_TMUX=$(readlink -f ../tmux)
+TMP=$(mktemp -d) || exit 1
+TMUX_TMPDIR="$TMP"
+export TMUX_TMPDIR
+
+OUT="$TEST_TMUX -LtestA$$ -f/dev/null"
+IN="$TEST_TMUX -LtestB$$ -f/dev/null"
+
+cleanup()
+{
+	$OUT kill-server 2>/dev/null
+	$IN kill-server 2>/dev/null
+	rm -rf "$TMP"
+}
+trap cleanup EXIT
+
+fail()
+{
+	echo "[FAIL] $1"
+	exit 1
+}
+
+settle()
+{
+	sleep 0.5
+}
+
+wait_option()
+{
+	option=$1
+	expected=$2
+	i=0
+
+	while [ "$i" -lt 30 ]; do
+		value=$($IN show -gqv "$option" 2>/dev/null || true)
+		[ "$value" = "$expected" ] && return 0
+		i=$((i + 1))
+		sleep 0.2
+	done
+	fail "expected $option to be '$expected' but got '$value'"
+}
+
+accept_prompt()
+{
+	key=$1
+	value=$2
+
+	$OUT send-keys "$key" || exit 1
+	settle
+	$OUT send-keys -l "$value" || exit 1
+	$OUT send-keys Enter || exit 1
+	settle
+}
+
+accept_two_prompts()
+{
+	key=$1
+	first=$2
+	second=$3
+
+	$OUT send-keys "$key" || exit 1
+	settle
+	$OUT send-keys -l "$first" || exit 1
+	$OUT send-keys Enter || exit 1
+	settle
+	$OUT send-keys -l "$second" || exit 1
+	$OUT send-keys Enter || exit 1
+	settle
+}
+
+reset_options()
+{
+	for option in \
+	    @r @first @second @plain @raw_tail @one @two @two_again \
+	    @double_index @marker; do
+		$IN set -g "$option" SENTINEL || exit 1
+	done
+	$IN set -g @marker unchanged || exit 1
+}
+
+$IN new -d -x80 -y24 "sh -c 'exec sleep 1000'" || exit 1
+$IN set -g status on || exit 1
+$IN set -g status-keys emacs || exit 1
+$IN set -g window-size manual || exit 1
+
+$IN bind -n M-s command-prompt -p '(single)' "set -g @r '%%'" ||
+	exit 1
+$IN bind -n M-f command-prompt -p '(first)' \
+	"set -g @first '%%' ; set -g @second '%%'" ||
+	exit 1
+$IN bind -n M-d command-prompt -p '(double)' 'set -g @r "%%%"' ||
+	exit 1
+$IN bind -n M-r command-prompt -p '(raw)' "set -g @r %1" ||
+	exit 1
+$IN bind -n M-a command-prompt -p '(all)' \
+	"set -g @first %1 ; set -g @second %1" ||
+	exit 1
+$IN bind -n M-m command-prompt -p 'one,two' \
+	"set -g @one %1 ; set -g @two %2 ; set -g @two_again %2" ||
+	exit 1
+$IN bind -n M-i command-prompt -p 'one,two' 'set -g @double_index "%2%"' ||
+	exit 1
+$IN bind -n M-n command-prompt -p '(none)' \
+	"set -g @plain no-template-markers" ||
+	exit 1
+
+$OUT new -d -x80 -y24 || exit 1
+$OUT set -g status off || exit 1
+$OUT set -g window-size manual || exit 1
+$OUT send-keys -l "$IN attach" || exit 1
+$OUT send-keys Enter || exit 1
+sleep 1
+
+reset_options
+
+# %% is for templates already inside single quotes. A single quote in the
+# replacement must stay data and must not close the surrounding quotes.
+payload="can't ; set -g @marker changed ; done"
+accept_prompt M-s "$payload"
+wait_option @r "$payload"
+wait_option @marker unchanged
+
+# Only the first %% is replaced.
+reset_options
+payload="first'value"
+accept_prompt M-f "$payload"
+wait_option @first "$payload"
+wait_option @second %%
+
+# %%% keeps the previous double-quote escaping behaviour.
+reset_options
+payload='a"$;~\z'
+accept_prompt M-d "$payload"
+wait_option @r "$payload"
+
+# %1 is intentionally left raw as an escape hatch.
+reset_options
+$IN set -g @raw_tail unchanged || exit 1
+accept_prompt M-r 'raw ; set -g @raw_tail yes'
+wait_option @r raw
+wait_option @raw_tail yes
+
+# All instances of %1 are replaced.
+reset_options
+accept_prompt M-a repeat
+wait_option @first repeat
+wait_option @second repeat
+
+# %1 and %2 select different prompt values, and all instances of %2 are
+# replaced.
+reset_options
+accept_two_prompts M-m one two
+wait_option @one one
+wait_option @two two
+wait_option @two_again two
+
+# %idx% uses double-quote escaping for indexed replacements.
+reset_options
+payload='b"$;~\y'
+accept_two_prompts M-i ignored "$payload"
+wait_option @double_index "$payload"
+
+# A template without replacement markers is left alone.
+reset_options
+accept_prompt M-n 'unused ; set -g @marker changed'
+wait_option @plain no-template-markers
+wait_option @marker unchanged
+
+exit 0