git-p4: Unset P4DIFF environment variable when using 'p4 -du diff'

diff --git a/setup.c b/setup.c
index bc80301c4239f1f101670cc623badb8bb694bd3d..41e298b8f549dcce28fca335c5f5b7fe5aea27bb 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -91,7 +91,7 @@ const char *prefix_path(const char *prefix, int len, const char *path)
 {
        const char *orig = path;
        char *sanitized = xmalloc(len + strlen(path) + 1);
-       if (*orig == '/')
+       if (is_absolute_path(orig))
                strcpy(sanitized, path);
        else {
                if (len)
@@ -100,7 +100,7 @@ const char *prefix_path(const char *prefix, int len, const char *path)
        }
        if (sanitary_path_copy(sanitized, sanitized))
                goto error_out;
-       if (*orig == '/') {
+       if (is_absolute_path(orig)) {
                const char *work_tree = get_git_work_tree();
                size_t len = strlen(work_tree);
                size_t total = strlen(sanitized) + 1;
@@ -202,6 +202,8 @@ const char **get_pathspec(const char *prefix, const char **pathspec)
                const char *p = prefix_path(prefix, prefixlen, *src);
                if (p)
                        *(dst++) = p;
+               else
+                       exit(128); /* error message already given */
                src++;
        }
        *dst = NULL;
@@ -448,8 +450,7 @@ int check_repository_format_version(const char *var, const char *value)
        } else if (strcmp(var, "core.worktree") == 0) {
                if (!value)
                        return config_error_nonbool(var);
-               if (git_work_tree_cfg)
-                       free(git_work_tree_cfg);
+               free(git_work_tree_cfg);
                git_work_tree_cfg = xstrdup(value);
                inside_work_tree = -1;
        }