support the comment/uncomment hotkey on Macs

^/ works on Linux but not on Mac
^- emits the same character code on Mac
^_ seems to be the underlying character code, and works on both
ctrl-7 also emits the same character code

2 files changed, 3 insertions, 2 deletions

diff --git a/src/kilo.c b/src/kilo.c
index 85ace88..7349537 100644
--- a/src/kilo.c
+++ b/src/kilo.c
@@ -673,7 +673,7 @@ static void editorMenu(void) {
     draw_menu_item("^g", "go");
     draw_menu_item("^b", "big picture");
     draw_menu_item("^f", "find");
-    draw_menu_item("^/", "(un)comment line");
+    draw_menu_item("^/|^-|^_", "(un)comment line");
     draw_menu_item("^h", "back up cursor");
     draw_menu_item("^l", "end of line");
     attrset(A_NORMAL);
@@ -1145,7 +1145,7 @@ static void editorProcessKeypress(lua_State* L) {
             editorDelChar();
         }
         break;
-    case CTRL_SLASH:
+    case CTRL_SLASH:  /* same as CTRL_UNDERSCORE */
         if (starts_with(E.row[E.rowoff+E.cy].chars, "--? "))
             editorUncommentCursorRow();
         else
diff --git a/src/teliva.h b/src/teliva.h
index 0f78bde..772f17a 100644
--- a/src/teliva.h
+++ b/src/teliva.h
@@ -21,6 +21,7 @@ enum KEY_ACTION {
   CTRL_U = 21,
   CTRL_X = 24,
   CTRL_SLASH = 31,
+  CTRL_UNDERSCORE = 31,
   DELETE = 127,
 };