From 26b302783a16dc2aa19451d9ba4515c8484f4a05 Mon Sep 17 00:00:00 2001
From: Max Schillinger <maxschillinger@web.de>
Date: Tue, 27 Aug 2024 16:19:41 +0200
Subject: [PATCH] Instant mode

Add '-n' flag to select the only (remaining) entry automatically.
---
 config.def.h |  1 +
 dmenu.1      |  5 ++++-
 dmenu.c      | 13 +++++++++++--
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/config.def.h b/config.def.h
index 1edb647..7e6f1ed 100644
--- a/config.def.h
+++ b/config.def.h
@@ -1,6 +1,7 @@
 /* See LICENSE file for copyright and license details. */
 /* Default settings; can be overriden by command line. */
 
+static int instant = 0;                     /* -n  option; if 1, select single entry automatically */
 static int topbar = 1;                      /* -b  option; if 0, dmenu appears at bottom     */
 /* -fn option overrides fonts[0]; default X11 font or font set */
 static const char *fonts[] = {
diff --git a/dmenu.1 b/dmenu.1
index 323f93c..29bdf7f 100644
--- a/dmenu.1
+++ b/dmenu.1
@@ -3,7 +3,7 @@
 dmenu \- dynamic menu
 .SH SYNOPSIS
 .B dmenu
-.RB [ \-bfiv ]
+.RB [ \-bfinv ]
 .RB [ \-l
 .IR lines ]
 .RB [ \-m
@@ -47,6 +47,9 @@ is faster, but will lock up X until stdin reaches end\-of\-file.
 .B \-i
 dmenu matches menu items case insensitively.
 .TP
+.B \-n
+dmenu instantly selects if only one match.
+.TP
 .BI \-l " lines"
 dmenu lists items vertically, with the given number of lines.
 .TP
diff --git a/dmenu.c b/dmenu.c
index 40f93e0..92d5154 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -277,6 +277,13 @@ match(void)
 		matchend = substrend;
 	}
 	curr = sel = matches;
+
+	if (instant && matches && matches==matchend && !lsubstr) {
+		puts(matches->text);
+		cleanup();
+		exit(0);
+	}
+
 	calcoffsets();
 }
 
@@ -715,7 +722,7 @@ setup(void)
 static void
 usage(void)
 {
-	die("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
+	die("usage: dmenu [-bfinv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
 	    "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]");
 }
 
@@ -737,7 +744,9 @@ main(int argc, char *argv[])
 		else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 			fstrncmp = strncasecmp;
 			fstrstr = cistrstr;
-		} else if (i + 1 == argc)
+		} else if (!strcmp(argv[i], "-n")) /* instant select only match */
+			instant = 1;
+		else if (i + 1 == argc)
 			usage();
 		/* these options take one argument */
 		else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
-- 
2.46.0