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

diff --git a/builtin-tag.c b/builtin-tag.c
index 03e70155fc676a8dd38ca5cef800ed4a446e921a..8dd959fe1c74507023f8e82c7f4682c1588ebac6 100644 (file)
--- a/builtin-tag.c
+++ b/builtin-tag.c
@@ -50,12 +50,15 @@ void launch_editor(const char *path, struct strbuf *buffer, const char *const *e
                size_t len = strlen(editor);
                int i = 0;
                const char *args[6];
+               struct strbuf arg0;
 
+               strbuf_init(&arg0, 0);
                if (strcspn(editor, "$ \t'") != len) {
                        /* there are specials */
+                       strbuf_addf(&arg0, "%s \"$@\"", editor);
                        args[i++] = "sh";
                        args[i++] = "-c";
-                       args[i++] = "$0 \"$@\"";
+                       args[i++] = arg0.buf;
                }
                args[i++] = editor;
                args[i++] = path;
@@ -63,6 +66,7 @@ void launch_editor(const char *path, struct strbuf *buffer, const char *const *e
 
                if (run_command_v_opt_cd_env(args, 0, NULL, env))
                        die("There was a problem with the editor %s.", editor);
+               strbuf_release(&arg0);
        }
 
        if (!buffer)
@@ -226,19 +230,17 @@ static int do_sign(struct strbuf *buffer)
 
        if (write_in_full(gpg.in, buffer->buf, buffer->len) != buffer->len) {
                close(gpg.in);
+               close(gpg.out);
                finish_command(&gpg);
                return error("gpg did not accept the tag data");
        }
        close(gpg.in);
-       gpg.close_in = 0;
        len = strbuf_read(buffer, gpg.out, 1024);
+       close(gpg.out);
 
        if (finish_command(&gpg) || !len || len < 0)
                return error("gpg failed to sign the tag");
 
-       if (len < 0)
-               return error("could not read the entire signature from gpg.");
-
        return 0;
 }
 
@@ -258,7 +260,7 @@ static int git_tag_config(const char *var, const char *value)
 {
        if (!strcmp(var, "user.signingkey")) {
                if (!value)
-                       die("user.signingkey without value");
+                       return config_error_nonbool(value);
                set_signingkey(value);
                return 0;
        }