From: Natanael Copa <ncopa@alpinelinux.org>
Patch-Source: https://git.alpinelinux.org/cgit/aports/tree/community/i3wm/musl.patch
Project-Bug-URL: https://github.com/i3/i3/issues/1859
Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=609306

Musl doesn't implement GLOB_TILDE, which is used by i3 when expanding paths.

This patch replaces usage of GLOB_TILDE in glob() by replacing tilde
with the content of $HOME - if set - manually.

As mentioned in the i3 bugtracker this is an issue that should be solved by musl.

A patch has been sent to musl upstream, but it hasn't been merged yet:
http://www.openwall.com/lists/musl/2017/01/17/1
---
--- a/i3bar/src/main.c
+++ b/i3bar/src/main.c
@@ -48,14 +48,20 @@ void debuglog(char *fmt, ...) {
  *
  */
 static char *expand_path(char *path) {
-    static glob_t globbuf;
-    if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0) {
-        ELOG("glob() failed\n");
-        exit(EXIT_FAILURE);
+    char *home, *expanded;
+
+    if (strncmp(path, "~/", 2) == 0) {
+        home = getenv("HOME");
+        if (home != NULL) {
+            /* new length: sum - 1 (omit '~') + 1 (for '\0') */
+            expanded = scalloc(strlen(home)+strlen(path), 1);
+            strcpy(expanded, home);
+            strcat(expanded, path+1);
+            return expanded;
+        }
     }
-    char *result = sstrdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
-    globfree(&globbuf);
-    return result;
+
+    return sstrdup(path);
 }

 void print_usage(char *elf_name) {
--- a/libi3/resolve_tilde.c
+++ b/libi3/resolve_tilde.c
@@ -19,28 +19,18 @@
  *
  */
 char *resolve_tilde(const char *path) {
-    static glob_t globbuf;
-    char *head, *tail, *result;
+    char *home, *expanded;

-    tail = strchr(path, '/');
-    head = sstrndup(path, tail ? (size_t)(tail - path) : strlen(path));
-
-    int res = glob(head, GLOB_TILDE, NULL, &globbuf);
-    free(head);
-    /* no match, or many wildcard matches are bad */
-    if (res == GLOB_NOMATCH || globbuf.gl_pathc != 1)
-        result = sstrdup(path);
-    else if (res != 0) {
-        err(EXIT_FAILURE, "glob() failed");
-    } else {
-        head = globbuf.gl_pathv[0];
-        result = scalloc(strlen(head) + (tail ? strlen(tail) : 0) + 1, 1);
-        strcpy(result, head);
-        if (tail) {
-            strcat(result, tail);
+    if (strncmp(path, "~/", 2) == 0) {
+        home = getenv("HOME");
+        if (home != NULL) {
+            /* new length: sum - 1 (omit '~') + 1 (for '\0') */
+            expanded = scalloc(strlen(home)+strlen(path), 1);
+            strcpy(expanded, home);
+            strcat(expanded, path+1);
+            return expanded;
         }
     }
-    globfree(&globbuf);

-    return result;
+    return sstrdup(path);
 }