From a8b05dd7d7420f6487c52e493629aaae91c4b2be Mon Sep 17 00:00:00 2001
From: Michael Grant <mgrant@grant.org>
Date: Mon, 14 Sep 2026 06:25:40 +0100
Subject: [PATCH] Add pipe-selection copy mode command

---
 regress/output-commands.sh | 7 +++++++
 tmux.1                     | 7 +++++++
 window-copy.c              | 6 ++++++
 3 files changed, 20 insertions(+)

diff --git a/regress/output-commands.sh b/regress/output-commands.sh
index 5b67efb6a..87833427f 100755
--- a/regress/output-commands.sh
+++ b/regress/output-commands.sh
@@ -37,6 +37,13 @@ $TMUX send-keys -X copy-selection || exit 1
 [ "$($TMUX show-buffer)" = unfinished ] || exit 1
 $TMUX send-keys -X cancel || exit 1
 
+$TMUX copy-mode || exit 1
+$TMUX send-keys -X select-output || exit 1
+$TMUX send-keys -X pipe-selection "wc -c >$OUT" || exit 1
+sleep 1
+[ "$(cat "$OUT")" = 10 ] || exit 1
+$TMUX send-keys -X cancel || exit 1
+
 $TMUX copy-mode || exit 1
 $TMUX send-keys -X search-backward separator || exit 1
 $TMUX send-keys -X copy-output || exit 1
diff --git a/tmux.1 b/tmux.1
index 8e10a34e6..a60b169b7 100644
--- a/tmux.1
+++ b/tmux.1
@@ -2317,6 +2317,13 @@ Pipe the current OSC 133 command output to
 .Ar command
 and clear the selection.
 .It Xo
+.Ic pipe\-selection
+.Op Ar command
+.Xc
+Pipe the selected text to
+.Ar command
+and clear the selection.
+.It Xo
 .Ic previous\-matching\-bracket
 (emacs: M\-C\-b)
 .Xc
diff --git a/window-copy.c b/window-copy.c
index 15d288be6..e4b58a185 100644
--- a/window-copy.c
+++ b/window-copy.c
@@ -3904,6 +3904,12 @@ static const struct {
 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
 	  .f = window_copy_cmd_pipe_output
 	},
+	{ .command = "pipe-selection",
+	  .args = { "", 0, 1, NULL },
+	  .flags = 0,
+	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
+	  .f = window_copy_cmd_pipe
+	},
 	{ .command = "previous-matching-bracket",
 	  .args = { "", 0, 0, NULL },
 	  .flags = WINDOW_COPY_CMD_FLAG_READONLY,