]> git.ipfire.org Git - thirdparty/git.git/blobdiff - diff.c
Sync with 2.16.6
[thirdparty/git.git] / diff.c
diff --git a/diff.c b/diff.c
index 1898dd307d40db131ba2378e22ed3efed1dc2520..4c59f5f5d3d32286daefbeeb25ed5291070fe762 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -124,18 +124,18 @@ static int parse_dirstat_params(struct diff_options *options, const char *params
        for (i = 0; i < params.nr; i++) {
                const char *p = params.items[i].string;
                if (!strcmp(p, "changes")) {
-                       DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
-                       DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
+                       options->flags.dirstat_by_line = 0;
+                       options->flags.dirstat_by_file = 0;
                } else if (!strcmp(p, "lines")) {
-                       DIFF_OPT_SET(options, DIRSTAT_BY_LINE);
-                       DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
+                       options->flags.dirstat_by_line = 1;
+                       options->flags.dirstat_by_file = 0;
                } else if (!strcmp(p, "files")) {
-                       DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
-                       DIFF_OPT_SET(options, DIRSTAT_BY_FILE);
+                       options->flags.dirstat_by_line = 0;
+                       options->flags.dirstat_by_file = 1;
                } else if (!strcmp(p, "noncumulative")) {
-                       DIFF_OPT_CLR(options, DIRSTAT_CUMULATIVE);
+                       options->flags.dirstat_cumulative = 0;
                } else if (!strcmp(p, "cumulative")) {
-                       DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE);
+                       options->flags.dirstat_cumulative = 1;
                } else if (isdigit(*p)) {
                        char *end;
                        int permille = strtoul(p, &end, 10) * 10;
@@ -246,7 +246,7 @@ static int parse_ws_error_highlight(const char *arg)
  */
 void init_diff_ui_defaults(void)
 {
-       diff_detect_rename_default = 1;
+       diff_detect_rename_default = DIFF_DETECT_RENAME;
 }
 
 int git_diff_heuristic_config(const char *var, const char *value, void *cb)
@@ -1412,7 +1412,7 @@ static void emit_rewrite_diff(const char *name_a,
        struct emit_callback ecbdata;
        struct strbuf out = STRBUF_INIT;
 
-       if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) {
+       if (diff_mnemonic_prefix && o->flags.reverse_diff) {
                a_prefix = o->b_prefix;
                b_prefix = o->a_prefix;
        } else {
@@ -1504,7 +1504,7 @@ struct diff_words_style_elem {
 
 struct diff_words_style {
        enum diff_words_type type;
-       struct diff_words_style_elem new, old, ctx;
+       struct diff_words_style_elem new_word, old_word, ctx;
        const char *newline;
 };
 
@@ -1655,12 +1655,12 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
        }
        if (minus_begin != minus_end) {
                fn_out_diff_words_write_helper(diff_words->opt,
-                               &style->old, style->newline,
+                               &style->old_word, style->newline,
                                minus_end - minus_begin, minus_begin);
        }
        if (plus_begin != plus_end) {
                fn_out_diff_words_write_helper(diff_words->opt,
-                               &style->new, style->newline,
+                               &style->new_word, style->newline,
                                plus_end - plus_begin, plus_begin);
        }
 
@@ -1758,7 +1758,7 @@ static void diff_words_show(struct diff_words_data *diff_words)
                emit_diff_symbol(diff_words->opt, DIFF_SYMBOL_WORD_DIFF,
                                 line_prefix, strlen(line_prefix), 0);
                fn_out_diff_words_write_helper(diff_words->opt,
-                       &style->old, style->newline,
+                       &style->old_word, style->newline,
                        diff_words->minus.text.size,
                        diff_words->minus.text.ptr);
                diff_words->minus.text.size = 0;
@@ -1883,8 +1883,8 @@ static void init_diff_words_data(struct emit_callback *ecbdata,
        }
        if (want_color(o->use_color)) {
                struct diff_words_style *st = ecbdata->diff_words->style;
-               st->old.color = diff_get_color_opt(o, DIFF_FILE_OLD);
-               st->new.color = diff_get_color_opt(o, DIFF_FILE_NEW);
+               st->old_word.color = diff_get_color_opt(o, DIFF_FILE_OLD);
+               st->new_word.color = diff_get_color_opt(o, DIFF_FILE_NEW);
                st->ctx.color = diff_get_color_opt(o, DIFF_CONTEXT);
        }
 }
@@ -2045,11 +2045,10 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
        }
 }
 
-static char *pprint_rename(const char *a, const char *b)
+static void pprint_rename(struct strbuf *name, const char *a, const char *b)
 {
-       const char *old = a;
-       const char *new = b;
-       struct strbuf name = STRBUF_INIT;
+       const char *old_name = a;
+       const char *new_name = b;
        int pfx_length, sfx_length;
        int pfx_adjust_for_slash;
        int len_a = strlen(a);
@@ -2059,24 +2058,24 @@ static char *pprint_rename(const char *a, const char *b)
        int qlen_b = quote_c_style(b, NULL, NULL, 0);
 
        if (qlen_a || qlen_b) {
-               quote_c_style(a, &name, NULL, 0);
-               strbuf_addstr(&name, " => ");
-               quote_c_style(b, &name, NULL, 0);
-               return strbuf_detach(&name, NULL);
+               quote_c_style(a, name, NULL, 0);
+               strbuf_addstr(name, " => ");
+               quote_c_style(b, name, NULL, 0);
+               return;
        }
 
        /* Find common prefix */
        pfx_length = 0;
-       while (*old && *new && *old == *new) {
-               if (*old == '/')
-                       pfx_length = old - a + 1;
-               old++;
-               new++;
+       while (*old_name && *new_name && *old_name == *new_name) {
+               if (*old_name == '/')
+                       pfx_length = old_name - a + 1;
+               old_name++;
+               new_name++;
        }
 
        /* Find common suffix */
-       old = a + len_a;
-       new = b + len_b;
+       old_name = a + len_a;
+       new_name = b + len_b;
        sfx_length = 0;
        /*
         * If there is a common prefix, it must end in a slash.  In
@@ -2087,13 +2086,13 @@ static char *pprint_rename(const char *a, const char *b)
         * underrun the input strings.
         */
        pfx_adjust_for_slash = (pfx_length ? 1 : 0);
-       while (a + pfx_length - pfx_adjust_for_slash <= old &&
-              b + pfx_length - pfx_adjust_for_slash <= new &&
-              *old == *new) {
-               if (*old == '/')
-                       sfx_length = len_a - (old - a);
-               old--;
-               new--;
+       while (a + pfx_length - pfx_adjust_for_slash <= old_name &&
+              b + pfx_length - pfx_adjust_for_slash <= new_name &&
+              *old_name == *new_name) {
+               if (*old_name == '/')
+                       sfx_length = len_a - (old_name - a);
+               old_name--;
+               new_name--;
        }
 
        /*
@@ -2109,19 +2108,18 @@ static char *pprint_rename(const char *a, const char *b)
        if (b_midlen < 0)
                b_midlen = 0;
 
-       strbuf_grow(&name, pfx_length + a_midlen + b_midlen + sfx_length + 7);
+       strbuf_grow(name, pfx_length + a_midlen + b_midlen + sfx_length + 7);
        if (pfx_length + sfx_length) {
-               strbuf_add(&name, a, pfx_length);
-               strbuf_addch(&name, '{');
+               strbuf_add(name, a, pfx_length);
+               strbuf_addch(name, '{');
        }
-       strbuf_add(&name, a + pfx_length, a_midlen);
-       strbuf_addstr(&name, " => ");
-       strbuf_add(&name, b + pfx_length, b_midlen);
+       strbuf_add(name, a + pfx_length, a_midlen);
+       strbuf_addstr(name, " => ");
+       strbuf_add(name, b + pfx_length, b_midlen);
        if (pfx_length + sfx_length) {
-               strbuf_addch(&name, '}');
-               strbuf_add(&name, a + len_a - sfx_length, sfx_length);
+               strbuf_addch(name, '}');
+               strbuf_add(name, a + len_a - sfx_length, sfx_length);
        }
-       return strbuf_detach(&name, NULL);
 }
 
 struct diffstat_t {
@@ -2131,6 +2129,7 @@ struct diffstat_t {
                char *from_name;
                char *name;
                char *print_name;
+               const char *comments;
                unsigned is_unmerged:1;
                unsigned is_binary:1;
                unsigned is_renamed:1;
@@ -2197,23 +2196,20 @@ static void show_graph(struct strbuf *out, char ch, int cnt,
 
 static void fill_print_name(struct diffstat_file *file)
 {
-       char *pname;
+       struct strbuf pname = STRBUF_INIT;
 
        if (file->print_name)
                return;
 
-       if (!file->is_renamed) {
-               struct strbuf buf = STRBUF_INIT;
-               if (quote_c_style(file->name, &buf, NULL, 0)) {
-                       pname = strbuf_detach(&buf, NULL);
-               } else {
-                       pname = file->name;
-                       strbuf_release(&buf);
-               }
-       } else {
-               pname = pprint_rename(file->from_name, file->name);
-       }
-       file->print_name = pname;
+       if (file->is_renamed)
+               pprint_rename(&pname, file->from_name, file->name);
+       else
+               quote_c_style(file->name, &pname, NULL, 0);
+
+       if (file->comments)
+               strbuf_addf(&pname, " (%s)", file->comments);
+
+       file->print_name = strbuf_detach(&pname, NULL);
 }
 
 static void print_stat_summary_inserts_deletes(struct diff_options *options,
@@ -2594,14 +2590,14 @@ struct dirstat_dir {
 static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
                unsigned long changed, const char *base, int baselen)
 {
-       unsigned long this_dir = 0;
+       unsigned long sum_changes = 0;
        unsigned int sources = 0;
        const char *line_prefix = diff_line_prefix(opt);
 
        while (dir->nr) {
                struct dirstat_file *f = dir->files;
                int namelen = strlen(f->name);
-               unsigned long this;
+               unsigned long changes;
                char *slash;
 
                if (namelen < baselen)
@@ -2611,15 +2607,15 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
                slash = strchr(f->name + baselen, '/');
                if (slash) {
                        int newbaselen = slash + 1 - f->name;
-                       this = gather_dirstat(opt, dir, changed, f->name, newbaselen);
+                       changes = gather_dirstat(opt, dir, changed, f->name, newbaselen);
                        sources++;
                } else {
-                       this = f->changed;
+                       changes = f->changed;
                        dir->files++;
                        dir->nr--;
                        sources += 2;
                }
-               this_dir += this;
+               sum_changes += changes;
        }
 
        /*
@@ -2629,8 +2625,8 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
         *    under this directory (sources == 1).
         */
        if (baselen && sources != 1) {
-               if (this_dir) {
-                       int permille = this_dir * 1000 / changed;
+               if (sum_changes) {
+                       int permille = sum_changes * 1000 / changed;
                        if (permille >= dir->permille) {
                                fprintf(opt->file, "%s%4d.%01d%% %.*s\n", line_prefix,
                                        permille / 10, permille % 10, baselen, base);
@@ -2639,7 +2635,7 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
                        }
                }
        }
-       return this_dir;
+       return sum_changes;
 }
 
 static int dirstat_compare(const void *_a, const void *_b)
@@ -2660,7 +2656,7 @@ static void show_dirstat(struct diff_options *options)
        dir.alloc = 0;
        dir.nr = 0;
        dir.permille = options->dirstat_permille;
-       dir.cumulative = DIFF_OPT_TST(options, DIRSTAT_CUMULATIVE);
+       dir.cumulative = options->flags.dirstat_cumulative;
 
        changed = 0;
        for (i = 0; i < q->nr; i++) {
@@ -2686,7 +2682,7 @@ static void show_dirstat(struct diff_options *options)
                        goto found_damage;
                }
 
-               if (DIFF_OPT_TST(options, DIRSTAT_BY_FILE)) {
+               if (options->flags.dirstat_by_file) {
                        /*
                         * In --dirstat-by-file mode, we don't really need to
                         * look at the actual file contents at all.
@@ -2761,7 +2757,7 @@ static void show_dirstat_by_line(struct diffstat_t *data, struct diff_options *o
        dir.alloc = 0;
        dir.nr = 0;
        dir.permille = options->dirstat_permille;
-       dir.cumulative = DIFF_OPT_TST(options, DIRSTAT_CUMULATIVE);
+       dir.cumulative = options->flags.dirstat_cumulative;
 
        changed = 0;
        for (i = 0; i < data->nr; i++) {
@@ -2797,8 +2793,7 @@ static void free_diffstat_info(struct diffstat_t *diffstat)
        int i;
        for (i = 0; i < diffstat->nr; i++) {
                struct diffstat_file *f = diffstat->files[i];
-               if (f->name != f->print_name)
-                       free(f->print_name);
+               free(f->print_name);
                free(f->name);
                free(f->from_name);
                free(f);
@@ -3048,7 +3043,7 @@ static void builtin_diff(const char *name_a,
        const char *line_prefix = diff_line_prefix(o);
 
        diff_set_mnemonic_prefix(o, "a/", "b/");
-       if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
+       if (o->flags.reverse_diff) {
                a_prefix = o->b_prefix;
                b_prefix = o->a_prefix;
        } else {
@@ -3072,7 +3067,7 @@ static void builtin_diff(const char *name_a,
                return;
        }
 
-       if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) {
+       if (o->flags.allow_textconv) {
                textconv_one = get_textconv(one);
                textconv_two = get_textconv(two);
        }
@@ -3132,13 +3127,13 @@ static void builtin_diff(const char *name_a,
                                 header.len, 0);
                strbuf_reset(&header);
                goto free_ab_and_return;
-       } else if (!DIFF_OPT_TST(o, TEXT) &&
+       } else if (!o->flags.text &&
            ( (!textconv_one && diff_filespec_is_binary(one)) ||
              (!textconv_two && diff_filespec_is_binary(two)) )) {
                struct strbuf sb = STRBUF_INIT;
                if (!one->data && !two->data &&
                    S_ISREG(one->mode) && S_ISREG(two->mode) &&
-                   !DIFF_OPT_TST(o, BINARY)) {
+                   !o->flags.binary) {
                        if (!oidcmp(&one->oid, &two->oid)) {
                                if (must_show_header)
                                        emit_diff_symbol(o, DIFF_SYMBOL_HEADER,
@@ -3167,7 +3162,7 @@ static void builtin_diff(const char *name_a,
                }
                emit_diff_symbol(o, DIFF_SYMBOL_HEADER, header.buf, header.len, 0);
                strbuf_reset(&header);
-               if (DIFF_OPT_TST(o, BINARY))
+               if (o->flags.binary)
                        emit_binary_diff(o, &mf1, &mf2);
                else {
                        strbuf_addf(&sb, "%sBinary files %s and %s differ\n",
@@ -3210,10 +3205,12 @@ static void builtin_diff(const char *name_a,
                ecbdata.opt = o;
                ecbdata.header = header.len ? &header : NULL;
                xpp.flags = o->xdl_opts;
+               xpp.anchors = o->anchors;
+               xpp.anchors_nr = o->anchors_nr;
                xecfg.ctxlen = o->context;
                xecfg.interhunkctxlen = o->interhunkcontext;
                xecfg.flags = XDL_EMIT_FUNCNAMES;
-               if (DIFF_OPT_TST(o, FUNCCONTEXT))
+               if (o->flags.funccontext)
                        xecfg.flags |= XDL_EMIT_FUNCCONTEXT;
                if (pe)
                        xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags);
@@ -3246,6 +3243,32 @@ static void builtin_diff(const char *name_a,
        return;
 }
 
+static char *get_compact_summary(const struct diff_filepair *p, int is_renamed)
+{
+       if (!is_renamed) {
+               if (p->status == DIFF_STATUS_ADDED) {
+                       if (S_ISLNK(p->two->mode))
+                               return "new +l";
+                       else if ((p->two->mode & 0777) == 0755)
+                               return "new +x";
+                       else
+                               return "new";
+               } else if (p->status == DIFF_STATUS_DELETED)
+                       return "gone";
+       }
+       if (S_ISLNK(p->one->mode) && !S_ISLNK(p->two->mode))
+               return "mode -l";
+       else if (!S_ISLNK(p->one->mode) && S_ISLNK(p->two->mode))
+               return "mode +l";
+       else if ((p->one->mode & 0777) == 0644 &&
+                (p->two->mode & 0777) == 0755)
+               return "mode +x";
+       else if ((p->one->mode & 0777) == 0755 &&
+                (p->two->mode & 0777) == 0644)
+               return "mode -x";
+       return NULL;
+}
+
 static void builtin_diffstat(const char *name_a, const char *name_b,
                             struct diff_filespec *one,
                             struct diff_filespec *two,
@@ -3265,6 +3288,8 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
 
        data = diffstat_add(diffstat, name_a, name_b);
        data->is_interesting = p->status != DIFF_STATUS_UNKNOWN;
+       if (o->flags.stat_with_summary)
+               data->comments = get_compact_summary(p, data->is_renamed);
 
        if (!one || !two) {
                data->is_unmerged = 1;
@@ -3302,6 +3327,8 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
                memset(&xpp, 0, sizeof(xpp));
                memset(&xecfg, 0, sizeof(xecfg));
                xpp.flags = o->xdl_opts;
+               xpp.anchors = o->anchors;
+               xpp.anchors_nr = o->anchors_nr;
                xecfg.ctxlen = o->context;
                xecfg.interhunkctxlen = o->interhunkcontext;
                if (xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat,
@@ -3378,7 +3405,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
        diff_free_filespec_data(one);
        diff_free_filespec_data(two);
        if (data.status)
-               DIFF_OPT_SET(o, CHECK_FAILED);
+               o->flags.check_failed = 1;
 }
 
 struct diff_filespec *alloc_filespec(const char *path)
@@ -3516,13 +3543,13 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
 {
        int size_only = flags & CHECK_SIZE_ONLY;
        int err = 0;
+       int conv_flags = global_conv_flags_eol;
        /*
         * demote FAIL to WARN to allow inspecting the situation
         * instead of refusing.
         */
-       enum safe_crlf crlf_warn = (safe_crlf == SAFE_CRLF_FAIL
-                                   ? SAFE_CRLF_WARN
-                                   : safe_crlf);
+       if (conv_flags & CONV_EOL_RNDTRP_DIE)
+               conv_flags = CONV_EOL_RNDTRP_WARN;
 
        if (!DIFF_FILE_VALID(s))
                die("internal error: asking to populate invalid file.");
@@ -3599,7 +3626,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
                /*
                 * Convert from working tree format to canonical git format
                 */
-               if (convert_to_git(&the_index, s->path, s->data, s->size, &buf, crlf_warn)) {
+               if (convert_to_git(&the_index, s->path, s->data, s->size, &buf, conv_flags)) {
                        size_t size = 0;
                        munmap(s->data, s->size);
                        s->should_munmap = 0;
@@ -3656,15 +3683,15 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
                           int mode)
 {
        struct strbuf buf = STRBUF_INIT;
-       struct strbuf template = STRBUF_INIT;
+       struct strbuf tempfile = STRBUF_INIT;
        char *path_dup = xstrdup(path);
        const char *base = basename(path_dup);
 
        /* Generate "XXXXXX_basename.ext" */
-       strbuf_addstr(&template, "XXXXXX_");
-       strbuf_addstr(&template, base);
+       strbuf_addstr(&tempfile, "XXXXXX_");
+       strbuf_addstr(&tempfile, base);
 
-       temp->tempfile = mks_tempfile_ts(template.buf, strlen(base) + 1);
+       temp->tempfile = mks_tempfile_ts(tempfile.buf, strlen(base) + 1);
        if (!temp->tempfile)
                die_errno("unable to create temp-file");
        if (convert_to_working_tree(path,
@@ -3679,7 +3706,7 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
        oid_to_hex_r(temp->hex, oid);
        xsnprintf(temp->mode, sizeof(temp->mode), "%06o", mode);
        strbuf_release(&buf);
-       strbuf_release(&template);
+       strbuf_release(&tempfile);
        free(path_dup);
 }
 
@@ -3870,9 +3897,9 @@ static void fill_metainfo(struct strbuf *msg,
                *must_show_header = 0;
        }
        if (one && two && oidcmp(&one->oid, &two->oid)) {
-               int abbrev = DIFF_OPT_TST(o, FULL_INDEX) ? 40 : DEFAULT_ABBREV;
+               int abbrev = o->flags.full_index ? 40 : DEFAULT_ABBREV;
 
-               if (DIFF_OPT_TST(o, BINARY)) {
+               if (o->flags.binary) {
                        mmfile_t mf;
                        if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) ||
                            (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
@@ -3902,7 +3929,7 @@ static void run_diff_cmd(const char *pgm,
        int must_show_header = 0;
 
 
-       if (DIFF_OPT_TST(o, ALLOW_EXTERNAL)) {
+       if (o->flags.allow_external) {
                struct userdiff_driver *drv = userdiff_find_by_path(attr_path);
                if (drv && drv->external)
                        pgm = drv->external;
@@ -3982,7 +4009,7 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o)
        if (o->prefix_length)
                strip_prefix(o->prefix_length, &name, &other);
 
-       if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL))
+       if (!o->flags.allow_external)
                pgm = NULL;
 
        if (DIFF_PAIR_UNMERGED(p)) {
@@ -4081,7 +4108,8 @@ void diff_setup(struct diff_options *options)
        options->context = diff_context_default;
        options->interhunkcontext = diff_interhunk_context_default;
        options->ws_error_highlight = ws_error_highlight_default;
-       DIFF_OPT_SET(options, RENAME_EMPTY);
+       options->flags.rename_empty = 1;
+       options->objfind = NULL;
 
        /* pathchange left =NULL by default */
        options->change = diff_change;
@@ -4106,22 +4134,20 @@ void diff_setup(struct diff_options *options)
 
 void diff_setup_done(struct diff_options *options)
 {
-       int count = 0;
+       unsigned check_mask = DIFF_FORMAT_NAME |
+                             DIFF_FORMAT_NAME_STATUS |
+                             DIFF_FORMAT_CHECKDIFF |
+                             DIFF_FORMAT_NO_OUTPUT;
 
        if (options->set_default)
                options->set_default(options);
 
-       if (options->output_format & DIFF_FORMAT_NAME)
-               count++;
-       if (options->output_format & DIFF_FORMAT_NAME_STATUS)
-               count++;
-       if (options->output_format & DIFF_FORMAT_CHECKDIFF)
-               count++;
-       if (options->output_format & DIFF_FORMAT_NO_OUTPUT)
-               count++;
-       if (count > 1)
+       if (HAS_MULTI_BITS(options->output_format & check_mask))
                die(_("--name-only, --name-status, --check and -s are mutually exclusive"));
 
+       if (HAS_MULTI_BITS(options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK))
+               die(_("-G, -S and --find-object are mutually exclusive"));
+
        /*
         * Most of the time we can say "there are changes"
         * only by checking if there are changed paths, but
@@ -4129,17 +4155,15 @@ void diff_setup_done(struct diff_options *options)
         * inside contents.
         */
 
-       if (DIFF_XDL_TST(options, IGNORE_WHITESPACE) ||
-           DIFF_XDL_TST(options, IGNORE_WHITESPACE_CHANGE) ||
-           DIFF_XDL_TST(options, IGNORE_WHITESPACE_AT_EOL))
-               DIFF_OPT_SET(options, DIFF_FROM_CONTENTS);
+       if ((options->xdl_opts & XDF_WHITESPACE_FLAGS))
+               options->flags.diff_from_contents = 1;
        else
-               DIFF_OPT_CLR(options, DIFF_FROM_CONTENTS);
+               options->flags.diff_from_contents = 0;
 
-       if (DIFF_OPT_TST(options, FIND_COPIES_HARDER))
+       if (options->flags.find_copies_harder)
                options->detect_rename = DIFF_DETECT_COPY;
 
-       if (!DIFF_OPT_TST(options, RELATIVE_NAME))
+       if (!options->flags.relative_name)
                options->prefix = NULL;
        if (options->prefix)
                options->prefix_length = strlen(options->prefix);
@@ -4169,18 +4193,18 @@ void diff_setup_done(struct diff_options *options)
                                      DIFF_FORMAT_DIRSTAT |
                                      DIFF_FORMAT_SUMMARY |
                                      DIFF_FORMAT_CHECKDIFF))
-               DIFF_OPT_SET(options, RECURSIVE);
+               options->flags.recursive = 1;
        /*
         * Also pickaxe would not work very well if you do not say recursive
         */
-       if (options->pickaxe)
-               DIFF_OPT_SET(options, RECURSIVE);
+       if (options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)
+               options->flags.recursive = 1;
        /*
         * When patches are generated, submodules diffed against the work tree
         * must be checked for dirtiness too so it can be shown in the output
         */
        if (options->output_format & DIFF_FORMAT_PATCH)
-               DIFF_OPT_SET(options, DIRTY_SUBMODULES);
+               options->flags.dirty_submodules = 1;
 
        if (options->detect_rename && options->rename_limit < 0)
                options->rename_limit = diff_rename_limit_default;
@@ -4202,14 +4226,14 @@ void diff_setup_done(struct diff_options *options)
         * to have found.  It does not make sense not to return with
         * exit code in such a case either.
         */
-       if (DIFF_OPT_TST(options, QUICK)) {
+       if (options->flags.quick) {
                options->output_format = DIFF_FORMAT_NO_OUTPUT;
-               DIFF_OPT_SET(options, EXIT_WITH_STATUS);
+               options->flags.exit_with_status = 1;
        }
 
        options->diff_path_counter = 0;
 
-       if (DIFF_OPT_TST(options, FOLLOW_RENAMES) && options->pathspec.nr != 1)
+       if (options->flags.follow_renames && options->pathspec.nr != 1)
                die(_("--follow requires exactly one pathspec"));
 
        if (!options->use_color || external_diff())
@@ -4487,6 +4511,23 @@ static int parse_ws_error_highlight_opt(struct diff_options *opt, const char *ar
        return 1;
 }
 
+static int parse_objfind_opt(struct diff_options *opt, const char *arg)
+{
+       struct object_id oid;
+
+       if (get_oid(arg, &oid))
+               return error("unable to resolve '%s'", arg);
+
+       if (!opt->objfind)
+               opt->objfind = xcalloc(1, sizeof(*opt->objfind));
+
+       opt->pickaxe_opts |= DIFF_PICKAXE_KIND_OBJFIND;
+       opt->flags.recursive = 1;
+       opt->flags.tree_in_recursive = 1;
+       oidset_insert(opt->objfind, &oid);
+       return 1;
+}
+
 int diff_opt_parse(struct diff_options *options,
                   const char **av, int ac, const char *prefix)
 {
@@ -4510,17 +4551,12 @@ int diff_opt_parse(struct diff_options *options,
                options->output_format |= DIFF_FORMAT_NUMSTAT;
        else if (!strcmp(arg, "--shortstat"))
                options->output_format |= DIFF_FORMAT_SHORTSTAT;
-       else if (!strcmp(arg, "-X") || !strcmp(arg, "--dirstat"))
-               return parse_dirstat_opt(options, "");
-       else if (skip_prefix(arg, "-X", &arg))
-               return parse_dirstat_opt(options, arg);
-       else if (skip_prefix(arg, "--dirstat=", &arg))
+       else if (skip_prefix(arg, "-X", &arg) ||
+                skip_to_optional_arg(arg, "--dirstat", &arg))
                return parse_dirstat_opt(options, arg);
        else if (!strcmp(arg, "--cumulative"))
                return parse_dirstat_opt(options, "cumulative");
-       else if (!strcmp(arg, "--dirstat-by-file"))
-               return parse_dirstat_opt(options, "files");
-       else if (skip_prefix(arg, "--dirstat-by-file=", &arg)) {
+       else if (skip_to_optional_arg(arg, "--dirstat-by-file", &arg)) {
                parse_dirstat_opt(options, "files");
                return parse_dirstat_opt(options, arg);
        }
@@ -4540,15 +4576,20 @@ int diff_opt_parse(struct diff_options *options,
        else if (starts_with(arg, "--stat"))
                /* --stat, --stat-width, --stat-name-width, or --stat-count */
                return stat_opt(options, av);
+       else if (!strcmp(arg, "--compact-summary")) {
+                options->flags.stat_with_summary = 1;
+                options->output_format |= DIFF_FORMAT_DIFFSTAT;
+       } else if (!strcmp(arg, "--no-compact-summary"))
+                options->flags.stat_with_summary = 0;
 
        /* renames options */
-       else if (starts_with(arg, "-B") || starts_with(arg, "--break-rewrites=") ||
-                !strcmp(arg, "--break-rewrites")) {
+       else if (starts_with(arg, "-B") ||
+                skip_to_optional_arg(arg, "--break-rewrites", NULL)) {
                if ((options->break_opt = diff_scoreopt_parse(arg)) == -1)
                        return error("invalid argument to -B: %s", arg+2);
        }
-       else if (starts_with(arg, "-M") || starts_with(arg, "--find-renames=") ||
-                !strcmp(arg, "--find-renames")) {
+       else if (starts_with(arg, "-M") ||
+                skip_to_optional_arg(arg, "--find-renames", NULL)) {
                if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
                        return error("invalid argument to -M: %s", arg+2);
                options->detect_rename = DIFF_DETECT_RENAME;
@@ -4556,10 +4597,10 @@ int diff_opt_parse(struct diff_options *options,
        else if (!strcmp(arg, "-D") || !strcmp(arg, "--irreversible-delete")) {
                options->irreversible_delete = 1;
        }
-       else if (starts_with(arg, "-C") || starts_with(arg, "--find-copies=") ||
-                !strcmp(arg, "--find-copies")) {
+       else if (starts_with(arg, "-C") ||
+                skip_to_optional_arg(arg, "--find-copies", NULL)) {
                if (options->detect_rename == DIFF_DETECT_COPY)
-                       DIFF_OPT_SET(options, FIND_COPIES_HARDER);
+                       options->flags.find_copies_harder = 1;
                if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
                        return error("invalid argument to -C: %s", arg+2);
                options->detect_rename = DIFF_DETECT_COPY;
@@ -4567,14 +4608,13 @@ int diff_opt_parse(struct diff_options *options,
        else if (!strcmp(arg, "--no-renames"))
                options->detect_rename = 0;
        else if (!strcmp(arg, "--rename-empty"))
-               DIFF_OPT_SET(options, RENAME_EMPTY);
+               options->flags.rename_empty = 1;
        else if (!strcmp(arg, "--no-rename-empty"))
-               DIFF_OPT_CLR(options, RENAME_EMPTY);
-       else if (!strcmp(arg, "--relative"))
-               DIFF_OPT_SET(options, RELATIVE_NAME);
-       else if (skip_prefix(arg, "--relative=", &arg)) {
-               DIFF_OPT_SET(options, RELATIVE_NAME);
-               options->prefix = arg;
+               options->flags.rename_empty = 0;
+       else if (skip_to_optional_arg_default(arg, "--relative", &arg, NULL)) {
+               options->flags.relative_name = 1;
+               if (arg)
+                       options->prefix = arg;
        }
 
        /* xdiff options */
@@ -4588,15 +4628,26 @@ int diff_opt_parse(struct diff_options *options,
                DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE);
        else if (!strcmp(arg, "--ignore-space-at-eol"))
                DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
+       else if (!strcmp(arg, "--ignore-cr-at-eol"))
+               DIFF_XDL_SET(options, IGNORE_CR_AT_EOL);
        else if (!strcmp(arg, "--ignore-blank-lines"))
                DIFF_XDL_SET(options, IGNORE_BLANK_LINES);
        else if (!strcmp(arg, "--indent-heuristic"))
                DIFF_XDL_SET(options, INDENT_HEURISTIC);
        else if (!strcmp(arg, "--no-indent-heuristic"))
                DIFF_XDL_CLR(options, INDENT_HEURISTIC);
-       else if (!strcmp(arg, "--patience"))
+       else if (!strcmp(arg, "--patience")) {
+               int i;
                options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
-       else if (!strcmp(arg, "--histogram"))
+               /*
+                * Both --patience and --anchored use PATIENCE_DIFF
+                * internally, so remove any anchors previously
+                * specified.
+                */
+               for (i = 0; i < options->anchors_nr; i++)
+                       free(options->anchors[i]);
+               options->anchors_nr = 0;
+       } else if (!strcmp(arg, "--histogram"))
                options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
        else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) {
                long value = parse_algorithm_value(optarg);
@@ -4608,29 +4659,32 @@ int diff_opt_parse(struct diff_options *options,
                options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
                options->xdl_opts |= value;
                return argcount;
+       } else if (skip_prefix(arg, "--anchored=", &arg)) {
+               options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
+               ALLOC_GROW(options->anchors, options->anchors_nr + 1,
+                          options->anchors_alloc);
+               options->anchors[options->anchors_nr++] = xstrdup(arg);
        }
 
        /* flags options */
        else if (!strcmp(arg, "--binary")) {
                enable_patch_output(&options->output_format);
-               DIFF_OPT_SET(options, BINARY);
+               options->flags.binary = 1;
        }
        else if (!strcmp(arg, "--full-index"))
-               DIFF_OPT_SET(options, FULL_INDEX);
+               options->flags.full_index = 1;
        else if (!strcmp(arg, "-a") || !strcmp(arg, "--text"))
-               DIFF_OPT_SET(options, TEXT);
+               options->flags.text = 1;
        else if (!strcmp(arg, "-R"))
-               DIFF_OPT_SET(options, REVERSE_DIFF);
+               options->flags.reverse_diff = 1;
        else if (!strcmp(arg, "--find-copies-harder"))
-               DIFF_OPT_SET(options, FIND_COPIES_HARDER);
+               options->flags.find_copies_harder = 1;
        else if (!strcmp(arg, "--follow"))
-               DIFF_OPT_SET(options, FOLLOW_RENAMES);
+               options->flags.follow_renames = 1;
        else if (!strcmp(arg, "--no-follow")) {
-               DIFF_OPT_CLR(options, FOLLOW_RENAMES);
-               DIFF_OPT_CLR(options, DEFAULT_FOLLOW_RENAMES);
-       } else if (!strcmp(arg, "--color"))
-               options->use_color = 1;
-       else if (skip_prefix(arg, "--color=", &arg)) {
+               options->flags.follow_renames = 0;
+               options->flags.default_follow_renames = 0;
+       } else if (skip_to_optional_arg_default(arg, "--color", &arg, "always")) {
                int value = git_config_colorbool(NULL, arg);
                if (value < 0)
                        return error("option `color' expects \"always\", \"auto\", or \"never\"");
@@ -4650,15 +4704,10 @@ int diff_opt_parse(struct diff_options *options,
                if (cm < 0)
                        die("bad --color-moved argument: %s", arg);
                options->color_moved = cm;
-       } else if (!strcmp(arg, "--color-words")) {
+       } else if (skip_to_optional_arg_default(arg, "--color-words", &options->word_regex, NULL)) {
                options->use_color = 1;
                options->word_diff = DIFF_WORDS_COLOR;
        }
-       else if (skip_prefix(arg, "--color-words=", &arg)) {
-               options->use_color = 1;
-               options->word_diff = DIFF_WORDS_COLOR;
-               options->word_regex = arg;
-       }
        else if (!strcmp(arg, "--word-diff")) {
                if (options->word_diff == DIFF_WORDS_NONE)
                        options->word_diff = DIFF_WORDS_PLAIN;
@@ -4684,26 +4733,22 @@ int diff_opt_parse(struct diff_options *options,
                return argcount;
        }
        else if (!strcmp(arg, "--exit-code"))
-               DIFF_OPT_SET(options, EXIT_WITH_STATUS);
+               options->flags.exit_with_status = 1;
        else if (!strcmp(arg, "--quiet"))
-               DIFF_OPT_SET(options, QUICK);
+               options->flags.quick = 1;
        else if (!strcmp(arg, "--ext-diff"))
-               DIFF_OPT_SET(options, ALLOW_EXTERNAL);
+               options->flags.allow_external = 1;
        else if (!strcmp(arg, "--no-ext-diff"))
-               DIFF_OPT_CLR(options, ALLOW_EXTERNAL);
-       else if (!strcmp(arg, "--textconv"))
-               DIFF_OPT_SET(options, ALLOW_TEXTCONV);
-       else if (!strcmp(arg, "--no-textconv"))
-               DIFF_OPT_CLR(options, ALLOW_TEXTCONV);
-       else if (!strcmp(arg, "--ignore-submodules")) {
-               DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
-               handle_ignore_submodules_arg(options, "all");
-       } else if (skip_prefix(arg, "--ignore-submodules=", &arg)) {
-               DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
+               options->flags.allow_external = 0;
+       else if (!strcmp(arg, "--textconv")) {
+               options->flags.allow_textconv = 1;
+               options->flags.textconv_set_via_cmdline = 1;
+       } else if (!strcmp(arg, "--no-textconv"))
+               options->flags.allow_textconv = 0;
+       else if (skip_to_optional_arg_default(arg, "--ignore-submodules", &arg, "all")) {
+               options->flags.override_submodule_config = 1;
                handle_ignore_submodules_arg(options, arg);
-       } else if (!strcmp(arg, "--submodule"))
-               options->submodule_format = DIFF_SUBMODULE_LOG;
-       else if (skip_prefix(arg, "--submodule=", &arg))
+       } else if (skip_to_optional_arg_default(arg, "--submodule", &arg, "log"))
                return parse_submodule_opt(options, arg);
        else if (skip_prefix(arg, "--ws-error-highlight=", &arg))
                return parse_ws_error_highlight_opt(options, arg);
@@ -4735,7 +4780,8 @@ int diff_opt_parse(struct diff_options *options,
        else if ((argcount = short_opt('O', av, &optarg))) {
                options->orderfile = prefix_filename(prefix, optarg);
                return argcount;
-       }
+       } else if (skip_prefix(arg, "--find-object=", &arg))
+               return parse_objfind_opt(options, arg);
        else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) {
                int offending = parse_diff_filter_opt(optarg, options);
                if (offending)
@@ -4774,11 +4820,11 @@ int diff_opt_parse(struct diff_options *options,
                         &options->interhunkcontext))
                ;
        else if (!strcmp(arg, "-W"))
-               DIFF_OPT_SET(options, FUNCCONTEXT);
+               options->flags.funccontext = 1;
        else if (!strcmp(arg, "--function-context"))
-               DIFF_OPT_SET(options, FUNCCONTEXT);
+               options->flags.funccontext = 1;
        else if (!strcmp(arg, "--no-function-context"))
-               DIFF_OPT_CLR(options, FUNCCONTEXT);
+               options->flags.funccontext = 0;
        else if ((argcount = parse_long_opt("output", av, &optarg))) {
                char *path = prefix_filename(prefix, optarg);
                options->file = xfopen(path, "w");
@@ -4901,14 +4947,20 @@ const char *diff_aligned_abbrev(const struct object_id *oid, int len)
        int abblen;
        const char *abbrev;
 
+       /* Do we want all 40 hex characters? */
        if (len == GIT_SHA1_HEXSZ)
                return oid_to_hex(oid);
 
+       /* An abbreviated value is fine, possibly followed by an ellipsis. */
        abbrev = diff_abbrev_oid(oid, len);
+
+       if (!print_sha1_ellipsis())
+               return abbrev;
+
        abblen = strlen(abbrev);
 
        /*
-        * In well-behaved cases, where the abbbreviated result is the
+        * In well-behaved cases, where the abbreviated result is the
         * same as the requested length, append three dots after the
         * abbreviation (hence the whole logic is limited to the case
         * where abblen < 37); when the actual abbreviated result is a
@@ -5217,10 +5269,12 @@ static void show_rename_copy(struct diff_options *opt, const char *renamecopy,
                struct diff_filepair *p)
 {
        struct strbuf sb = STRBUF_INIT;
-       char *names = pprint_rename(p->one->path, p->two->path);
+       struct strbuf names = STRBUF_INIT;
+
+       pprint_rename(&names, p->one->path, p->two->path);
        strbuf_addf(&sb, " %s %s (%d%%)\n",
-                       renamecopy, names, similarity_index(p));
-       free(names);
+                   renamecopy, names.buf, similarity_index(p));
+       strbuf_release(&names);
        emit_diff_symbol(opt, DIFF_SYMBOL_SUMMARY,
                                 sb.buf, sb.len, 0);
        show_mode_change(opt, p, 0);
@@ -5447,13 +5501,14 @@ N_("you may want to set your %s variable to at least "
 
 void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc)
 {
+       fflush(stdout);
        if (degraded_cc)
                warning(_(degrade_cc_to_c_warning));
        else if (needed)
                warning(_(rename_limit_warning));
        else
                return;
-       if (0 < needed && needed < 32767)
+       if (0 < needed)
                warning(_(rename_limit_advice), varname, needed);
 }
 
@@ -5528,7 +5583,7 @@ void diff_flush(struct diff_options *options)
                separator++;
        }
 
-       if (output_format & DIFF_FORMAT_DIRSTAT && DIFF_OPT_TST(options, DIRSTAT_BY_LINE))
+       if (output_format & DIFF_FORMAT_DIRSTAT && options->flags.dirstat_by_line)
                dirstat_by_line = 1;
 
        if (output_format & (DIFF_FORMAT_DIFFSTAT|DIFF_FORMAT_SHORTSTAT|DIFF_FORMAT_NUMSTAT) ||
@@ -5563,8 +5618,8 @@ void diff_flush(struct diff_options *options)
        }
 
        if (output_format & DIFF_FORMAT_NO_OUTPUT &&
-           DIFF_OPT_TST(options, EXIT_WITH_STATUS) &&
-           DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
+           options->flags.exit_with_status &&
+           options->flags.diff_from_contents) {
                /*
                 * run diff_flush_patch for the exit status. setting
                 * options->file to /dev/null should be safe, because we
@@ -5612,11 +5667,11 @@ free_queue:
         * diff_addremove/diff_change does not set the bit when
         * DIFF_FROM_CONTENTS is in effect (e.g. with -w).
         */
-       if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
+       if (options->flags.diff_from_contents) {
                if (options->found_changes)
-                       DIFF_OPT_SET(options, HAS_CHANGES);
+                       options->flags.has_changes = 1;
                else
-                       DIFF_OPT_CLR(options, HAS_CHANGES);
+                       options->flags.has_changes = 0;
        }
 }
 
@@ -5736,7 +5791,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
                         * to determine how many paths were dirty only
                         * due to stat info mismatch.
                         */
-                       if (!DIFF_OPT_TST(diffopt, NO_INDEX))
+                       if (!diffopt->flags.no_index)
                                diffopt->skip_stat_unmatch++;
                        diff_free_filepair(p);
                }
@@ -5776,7 +5831,7 @@ void diffcore_std(struct diff_options *options)
                if (options->break_opt != -1)
                        diffcore_merge_broken();
        }
-       if (options->pickaxe)
+       if (options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)
                diffcore_pickaxe(options);
        if (options->orderfile)
                diffcore_order(options->orderfile);
@@ -5785,10 +5840,10 @@ void diffcore_std(struct diff_options *options)
                diff_resolve_rename_copy();
        diffcore_apply_filter(options);
 
-       if (diff_queued_diff.nr && !DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
-               DIFF_OPT_SET(options, HAS_CHANGES);
+       if (diff_queued_diff.nr && !options->flags.diff_from_contents)
+               options->flags.has_changes = 1;
        else
-               DIFF_OPT_CLR(options, HAS_CHANGES);
+               options->flags.has_changes = 0;
 
        options->found_follow = 0;
 }
@@ -5800,23 +5855,23 @@ int diff_result_code(struct diff_options *opt, int status)
        diff_warn_rename_limit("diff.renameLimit",
                               opt->needed_rename_limit,
                               opt->degraded_cc_to_c);
-       if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
+       if (!opt->flags.exit_with_status &&
            !(opt->output_format & DIFF_FORMAT_CHECKDIFF))
                return status;
-       if (DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
-           DIFF_OPT_TST(opt, HAS_CHANGES))
+       if (opt->flags.exit_with_status &&
+           opt->flags.has_changes)
                result |= 01;
        if ((opt->output_format & DIFF_FORMAT_CHECKDIFF) &&
-           DIFF_OPT_TST(opt, CHECK_FAILED))
+           opt->flags.check_failed)
                result |= 02;
        return result;
 }
 
 int diff_can_quit_early(struct diff_options *opt)
 {
-       return (DIFF_OPT_TST(opt, QUICK) &&
+       return (opt->flags.quick &&
                !opt->filter &&
-               DIFF_OPT_TST(opt, HAS_CHANGES));
+               opt->flags.has_changes);
 }
 
 /*
@@ -5828,10 +5883,10 @@ int diff_can_quit_early(struct diff_options *opt)
 static int is_submodule_ignored(const char *path, struct diff_options *options)
 {
        int ignored = 0;
-       unsigned orig_flags = options->flags;
-       if (!DIFF_OPT_TST(options, OVERRIDE_SUBMODULE_CONFIG))
+       struct diff_flags orig_flags = options->flags;
+       if (!options->flags.override_submodule_config)
                set_diffopt_flags_from_submodule_config(options, path);
-       if (DIFF_OPT_TST(options, IGNORE_SUBMODULES))
+       if (options->flags.ignore_submodules)
                ignored = 1;
        options->flags = orig_flags;
        return ignored;
@@ -5860,7 +5915,7 @@ void diff_addremove(struct diff_options *options,
         * Before the final output happens, they are pruned after
         * merged into rename/copy pairs as appropriate.
         */
-       if (DIFF_OPT_TST(options, REVERSE_DIFF))
+       if (options->flags.reverse_diff)
                addremove = (addremove == '+' ? '-' :
                             addremove == '-' ? '+' : addremove);
 
@@ -5879,8 +5934,8 @@ void diff_addremove(struct diff_options *options,
        }
 
        diff_queue(&diff_queued_diff, one, two);
-       if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
-               DIFF_OPT_SET(options, HAS_CHANGES);
+       if (!options->flags.diff_from_contents)
+               options->flags.has_changes = 1;
 }
 
 void diff_change(struct diff_options *options,
@@ -5898,7 +5953,7 @@ void diff_change(struct diff_options *options,
            is_submodule_ignored(concatpath, options))
                return;
 
-       if (DIFF_OPT_TST(options, REVERSE_DIFF)) {
+       if (options->flags.reverse_diff) {
                SWAP(old_mode, new_mode);
                SWAP(old_oid, new_oid);
                SWAP(old_oid_valid, new_oid_valid);
@@ -5917,14 +5972,14 @@ void diff_change(struct diff_options *options,
        two->dirty_submodule = new_dirty_submodule;
        p = diff_queue(&diff_queued_diff, one, two);
 
-       if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
+       if (options->flags.diff_from_contents)
                return;
 
-       if (DIFF_OPT_TST(options, QUICK) && options->skip_stat_unmatch &&
+       if (options->flags.quick && options->skip_stat_unmatch &&
            !diff_filespec_check_stat_unmatch(p))
                return;
 
-       DIFF_OPT_SET(options, HAS_CHANGES);
+       options->flags.has_changes = 1;
 }
 
 struct diff_filepair *diff_unmerge(struct diff_options *options, const char *path)
@@ -6062,7 +6117,7 @@ void setup_diff_pager(struct diff_options *opt)
         * and because it is easy to find people oneline advising "git diff
         * --exit-code" in hooks and other scripts, we do not do so.
         */
-       if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
+       if (!opt->flags.exit_with_status &&
            check_pager_config("diff") != 0)
                setup_pager();
 }