[Keyb] Add a -list-keybindings command.

doc/rofi.1

@@ -220,6 +220,13 @@ Dump the current active theme, in rasi format, to stdout and exit.
 .PP
 Try to parse the file and return 0 when successful, non-zero when failed.
 
+.PP
+\fB\fC-list-keybindings\fR
+
+.PP
+List all known keybindings without trying to parse them. This can be used to
+look for duplicate bindings.
+
 .PP
 \fB\fC-threads\fR \fInum\fP
 

doc/rofi.1.markdown

@@ -143,6 +143,11 @@ Dump the current active theme, in rasi format, to stdout and exit.
 
 Try to parse the file and return 0 when successful, non-zero when failed.
 
+`-list-keybindings`
+
+List all known keybindings without trying to parse them. This can be used to
+look for duplicate bindings.
+
 `-threads` *num*
 
 Specify the number of threads **rofi** should use:

include/keyb.h

@@ -186,6 +186,7 @@ gboolean parse_keys_abe(NkBindings *bindings);
  */
 void setup_abe(void);
 
+void abe_list_all_bindings(gboolean is_term);
 /**
  * @param name Don't have the name.
  *

source/keyb.c

@@ -24,11 +24,11 @@
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  *
  */
+#include "rofi.h"
+#include "xrmoptions.h"
 #include <glib.h>
 #include <string.h>
 #include "nkutils-bindings.h"
-#include "rofi.h"
-#include "xrmoptions.h"
 
 typedef struct {
   guint id;
@@ -372,6 +372,24 @@ static const gchar *mouse_default_bindings[] = {
     [MOUSE_DCLICK_UP] = "!MouseDPrimary",
 };
 
+void abe_list_all_bindings(gboolean is_term ) {
+
+  int length = 0;
+  for (gsize i = 0; i < G_N_ELEMENTS(rofi_bindings); ++i) {
+    ActionBindingEntry *b = &rofi_bindings[i];
+    int sl = strlen(b->name);
+    length = MAX(length, sl);
+  }
+  for (gsize i = 0; i < G_N_ELEMENTS(rofi_bindings); ++i) {
+    ActionBindingEntry *b = &rofi_bindings[i];
+    if (is_term) {
+	    printf("%s%*s%s - %s\n", color_bold,length, b->name, color_reset,b->binding);
+    } else {
+	    printf("%*s - %s\n", length, b->name, b->binding);
+    }
+  }
+}
+
 void setup_abe(void) {
   for (gsize i = 0; i < G_N_ELEMENTS(rofi_bindings); ++i) {
     ActionBindingEntry *b = &rofi_bindings[i];
@@ -421,12 +439,22 @@ gboolean parse_keys_abe(NkBindings *bindings) {
       if (!nk_bindings_add_binding(bindings, b->scope, entry,
                                    binding_check_action, binding_trigger_action,
                                    GUINT_TO_POINTER(b->id), NULL, &error)) {
-        char *str = g_markup_printf_escaped(
-            "Failed to set binding <i>%s</i> for: <i>%s (%s)</i>:\n\t<span "
-            "size=\"smaller\" style=\"italic\">%s</span>\n",
-            b->binding, b->comment, b->name, error->message);
-        g_string_append(error_msg, str);
-        g_free(str);
+	if ( error->code == NK_BINDINGS_ERROR_ALREADY_REGISTERED && error->domain == NK_BINDINGS_ERROR){
+		char *str = g_markup_printf_escaped(
+				"Failed to set binding <i>%s</i> for: <i>%s (%s)</i>:\n\t<span "
+				"size=\"smaller\" style=\"italic\">Binding `%s` is already bound.\n"
+				"\tExecute <b>rofi -list-keybindings</b> to get the current list of configured bindings.</span>\n",
+				b->binding, b->comment, b->name, entry);
+		g_string_append(error_msg, str);
+		g_free(str);
+	} else {
+		char *str = g_markup_printf_escaped(
+				"Failed to set binding <i>%s</i> for: <i>%s (%s)</i>:\n\t<span "
+				"size=\"smaller\" style=\"italic\">%s</span>\n",
+				b->binding, b->comment, b->name, error->message);
+		g_string_append(error_msg, str);
+		g_free(str);
+	}
         g_clear_error(&error);
       }
     }

source/rofi.c

@@ -327,6 +327,9 @@ static void print_main_application_options(int is_term) {
   print_help_msg("-dump-theme", "",
                  "Dump the current theme in rasi format and exit.", NULL,
                  is_term);
+  print_help_msg("-list-keybindings", "",
+                 "Print a list of current keybindings and exit.", NULL,
+                 is_term);
 }
 static void help(G_GNUC_UNUSED int argc, char **argv) {
   int is_term = isatty(fileno(stdout));
@@ -1094,6 +1097,11 @@ int main(int argc, char *argv[]) {
     cleanup();
     return EXIT_SUCCESS;
   }
+  if (find_arg("-list-keybindings") >= 0) {
+    int is_term = isatty(fileno(stdout));
+    abe_list_all_bindings(is_term);
+    return EXIT_SUCCESS;
+  }
 
   unsigned int interval = 1;
   if (find_arg_uint("-record-screenshots", &interval)) {