fix crash when XOpenIM returns NULL - dmenu

commit f5036b90efd9423d805923a0bc73cd54e30e72ab
parent 153aaf88bf9bf5c6c4b118bd871f8cf1eafdcab5
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Tue, 12 Feb 2019 19:10:43 +0100

fix crash when XOpenIM returns NULL

for example when IME variables are set, but the program is not started (yet).

Diffstat:
M dmenu.c  | 13 +++++++++++--

1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/dmenu.c b/dmenu.c
@@ -664,8 +664,17 @@ setup(void)
                         CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
     XSetClassHint(dpy, win, &ch);
 
-    /* open input methods */
-    xim = XOpenIM(dpy, NULL, NULL, NULL);
+
+    /* input methods */
+    if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL) {
+        XSetLocaleModifiers("@im=local");
+        if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL) {
+            XSetLocaleModifiers("@im=");
+            if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
+                die("XOpenIM failed. Could not open input device.\n");
+        }
+    }
+
     xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
                     XNClientWindow, win, XNFocusWindow, win, NULL);