From 4c928dce746d64456bd7bedb8b909279a1bef3ec Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Tue, 14 May 2024 07:40:39 +0000
Subject: [PATCH] Add an option to disable unwrapping lines for searching, from
 meanderingprogrammer at gmail dot com, GitHub issue 3975.

---
 options-table.c |  8 ++++++++
 tmux.1          |  8 ++++++++
 window-copy.c   | 12 +++++++++---
 3 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/options-table.c b/options-table.c
index fe460473..939bcb69 100644
--- a/options-table.c
+++ b/options-table.c
@@ -384,6 +384,14 @@ const struct options_table_entry options_table[] = {
 	  .text = "Maximum number of commands to keep in history."
 	},
 
+	{ .name = "search-wrapped-lines",
+	  .type = OPTIONS_TABLE_FLAG,
+	  .scope = OPTIONS_TABLE_SERVER,
+	  .default_num = 1,
+	  .text = "Whether to include full wrapped lines when searching for "
+		  "text in copy mode."
+	},
+
 	{ .name = "set-clipboard",
 	  .type = OPTIONS_TABLE_CHOICE,
 	  .scope = OPTIONS_TABLE_SERVER,
diff --git a/tmux.1 b/tmux.1
index a5102216..08aa26c7 100644
--- a/tmux.1
+++ b/tmux.1
@@ -3795,6 +3795,14 @@ each client.
 .It Ic prompt-history-limit Ar number
 Set the number of history items to save in the history file for each type of
 command prompt.
+.It Xo Ic search-wrapped-lines
+.Op Ic on | off
+.Xc
+Defines how
+.Nm
+handles wrapped lines when searching in copy mode.
+When disabled, lines are truncated and searching is faster, but matches may be
+missed.
 .It Xo Ic set-clipboard
 .Op Ic on | external | off
 .Xc
diff --git a/window-copy.c b/window-copy.c
index a1f18476..9db17c3d 100644
--- a/window-copy.c
+++ b/window-copy.c
@@ -3615,11 +3615,13 @@ window_copy_search_jump(struct window_mode_entry *wme, struct grid *gd,
     int direction, int regex)
 {
 	u_int			 i, px, sx, ssize = 1;
-	int			 found = 0, cflags = REG_EXTENDED;
+	int			 wrapped, found = 0, cflags = REG_EXTENDED;
 	char			*sbuf;
 	regex_t			 reg;
 	struct grid_line	*gl;
 
+	wrapped = options_get_number(global_options, "search-wrapped-lines");
+
 	if (regex) {
 		sbuf = xmalloc(ssize);
 		sbuf[0] = '\0';
@@ -3636,7 +3638,9 @@ window_copy_search_jump(struct window_mode_entry *wme, struct grid *gd,
 	if (direction) {
 		for (i = fy; i <= endline; i++) {
 			gl = grid_get_line(gd, i);
-			if (i != endline && gl->flags & GRID_LINE_WRAPPED)
+			if (!wrapped &&
+			    i != endline &&
+			    gl->flags & GRID_LINE_WRAPPED)
 				continue;
 			if (regex) {
 				found = window_copy_search_lr_regex(gd,
@@ -3652,7 +3656,9 @@ window_copy_search_jump(struct window_mode_entry *wme, struct grid *gd,
 	} else {
 		for (i = fy + 1; endline < i; i--) {
 			gl = grid_get_line(gd, i - 1);
-			if (i != endline && gl->flags & GRID_LINE_WRAPPED)
+			if (!wrapped &&
+			    i != endline &&
+			    gl->flags & GRID_LINE_WRAPPED)
 				continue;
 			if (regex) {
 				found = window_copy_search_rl_regex(gd,