From 1c6bc9f92dd225a3b7ed53cff158efceaf99eb6d Mon Sep 17 00:00:00 2001
From: speedie <speedie@duck.com>
Date: Mon, 12 Jun 2023 17:09:34 +0200
Subject: [PATCH] Add -fl argument which can be used to check if a feature is
 supported

This could be very useful for shell scripts, or debugging.
---
 docs/docs.md |  3 +++
 libs/argv.c  | 42 ++++++++++++++++++++++++++++++++++++++++++
 libs/argv.h  |  1 +
 spmenu.1     |  3 +++
 4 files changed, 49 insertions(+)

diff --git a/docs/docs.md b/docs/docs.md
index c8eb1a7..5bbbaf7 100644
--- a/docs/docs.md
+++ b/docs/docs.md
@@ -368,6 +368,9 @@ You may use long, descriptive arguments or the shorter arguments.
 `-rv, --raw-version`
 :   Print raw spmenu version number to stdout
 
+`-fl, --feature-list`
+:   List the state of all features that can be toggled
+
 `-fn, --font font`
 :   Set the spmenu font to font
 
diff --git a/libs/argv.c b/libs/argv.c
index 7d52dc1..70722af 100644
--- a/libs/argv.c
+++ b/libs/argv.c
@@ -89,6 +89,9 @@ void readargs(int argc, char *argv[]) {
         if (!strcmp(argv[i], "-v") || (!strcmp(argv[i], "--version"))) { // prints version information
             puts("spmenu-"VERSION);
             exit(0);
+        } else if (!strcmp(argv[i], "-fl") || (!strcmp(argv[i], "--feature-list"))) { // feature list
+            comp_opts();
+            exit(0);
         } else if (!strcmp(argv[i], "-rv") || (!strcmp(argv[i], "--raw-version"))) { // help
             puts(VERSION);
             exit(0);
@@ -524,6 +527,44 @@ void readargs(int argc, char *argv[]) {
         insert(input, strlen(input));
 }
 
+void comp_opts(void) {
+#if USEWAYLAND
+    fprintf(stdout, "Wayland: Supported\n");
+#else
+    fprintf(stdout, "Wayland: Unsupported\n");
+#endif
+#if USEX
+    fprintf(stdout, "X11: Supported\n");
+#else
+    fprintf(stdout, "X11: Unsupported\n");
+#endif
+#if USERTL
+    fprintf(stdout, "RTL: Supported\n");
+#else
+    fprintf(stdout, "RTL: Unsupported\n");
+#endif
+#if USEIMAGE
+    fprintf(stdout, "Images: Supported\n");
+#else
+    fprintf(stdout, "Images: Unsupported\n");
+#endif
+#if USEXINERAMA
+    fprintf(stdout, "Xinerama: Supported\n");
+#else
+    fprintf(stdout, "Xinerama: Unsupported\n");
+#endif
+#if USECONFIG
+    fprintf(stdout, "Config: Supported\n");
+#else
+    fprintf(stdout, "Config: Unsupported\n");
+#endif
+#if USEXRESOURCES
+    fprintf(stdout, "xrdb: Supported\n");
+#else
+    fprintf(stdout, "xrdb: Unsupported\n");
+#endif
+}
+
 void usage(int status) {
     // print help
     fputs("spmenu ", status ? stderr : stdout);
@@ -659,6 +700,7 @@ void usage(int status) {
             "spmenu -wl,      --wayland                                   Run spmenu in Wayland mode\n"
             "spmenu -rv,      --raw-version                               Print spmenu version number to stdout\n"
             "spmenu -v,       --version                                   Print spmenu version to stdout\n"
+            "spmenu -fl,      --feature-list                              List the state of all features that can be toggled\n"
             "\n", status ? stderr : stdout);
 
     // colors
diff --git a/libs/argv.h b/libs/argv.h
index cb23acd..306182b 100644
--- a/libs/argv.h
+++ b/libs/argv.h
@@ -1,3 +1,4 @@
 /* See LICENSE file for copyright and license details. */
 static void readargs(int argc, char *argv[]);
 static void usage(int status);
+static void comp_opts(void);
diff --git a/spmenu.1 b/spmenu.1
index 86ccbfa..e0992ff 100644
--- a/spmenu.1
+++ b/spmenu.1
@@ -396,6 +396,9 @@ Print spmenu version to stdout
 \f[V]-rv, --raw-version\f[R]
 Print raw spmenu version number to stdout
 .TP
+\f[V]-fl, --feature-list\f[R]
+List the state of all features that can be toggled
+.TP
 \f[V]-fn, --font font\f[R]
 Set the spmenu font to font
 .TP