Merge branch 'jk/more-comments-on-textconv'

diff --git a/diff.c b/diff.c
index 80eb0c2156a0f3727f8a9598f3e83233224539b0..a088e269b42d4af24a756c991bf60dca8eb4153d 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -3693,12 +3693,16 @@ static int parse_ws_error_highlight(struct diff_options *opt, const char *arg)
        return 1;
 }
 
-int diff_opt_parse(struct diff_options *options, const char **av, int ac)
+int diff_opt_parse(struct diff_options *options,
+                  const char **av, int ac, const char *prefix)
 {
        const char *arg = av[0];
        const char *optarg;
        int argcount;
 
+       if (!prefix)
+               prefix = "";
+
        /* Output format options */
        if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch")
            || opt_arg(arg, 'U', "unified", &options->context))
@@ -3915,7 +3919,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
        else if (!strcmp(arg, "--pickaxe-regex"))
                options->pickaxe_opts |= DIFF_PICKAXE_REGEX;
        else if ((argcount = short_opt('O', av, &optarg))) {
-               options->orderfile = optarg;
+               const char *path = prefix_filename(prefix, strlen(prefix), optarg);
+               options->orderfile = xstrdup(path);
                return argcount;
        }
        else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) {
@@ -3954,9 +3959,10 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
        else if (!strcmp(arg, "--no-function-context"))
                DIFF_OPT_CLR(options, FUNCCONTEXT);
        else if ((argcount = parse_long_opt("output", av, &optarg))) {
-               options->file = fopen(optarg, "w");
+               const char *path = prefix_filename(prefix, strlen(prefix), optarg);
+               options->file = fopen(path, "w");
                if (!options->file)
-                       die_errno("Could not open '%s'", optarg);
+                       die_errno("Could not open '%s'", path);
                options->close_file = 1;
                return argcount;
        } else
@@ -5079,7 +5085,7 @@ size_t fill_textconv(struct userdiff_driver *driver,
 {
        size_t size;
 
-       if (!driver || !driver->textconv) {
+       if (!driver) {
                if (!DIFF_FILE_VALID(df)) {
                        *outbuf = "";
                        return 0;
@@ -5090,6 +5096,9 @@ size_t fill_textconv(struct userdiff_driver *driver,
                return df->size;
        }
 
+       if (!driver->textconv)
+               die("BUG: fill_textconv called with non-textconv driver");
+
        if (driver->textconv_cache && df->sha1_valid) {
                *outbuf = notes_cache_get(driver->textconv_cache, df->sha1,
                                          &size);