Remove connection between expand_data variable
in cat-file and in ref-filter.
It will help further to get rid of using expand_data in cat-file.

Signed-off-by: Olga Telezhnaia <olyatelezhn...@gmail.com>
Mentored-by: Christian Couder <christian.cou...@gmail.com>
Mentored by: Jeff King <p...@peff.net>
---
 builtin/cat-file.c |  3 ++-
 ref-filter.c       | 36 +++++++++++++++++++-----------------
 ref-filter.h       |  7 ++-----
 3 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 582679f3dca2c..273b4038e3893 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -292,6 +292,7 @@ static void batch_object_write(const char *obj_name, struct 
batch_options *opt,
        if (populate_value(&item))
                return;
 
+       data->type = item.type;
        strbuf_expand(&buf, opt->format.format, expand_format, &item);
        strbuf_addch(&buf, '\n');
        batch_write(opt, buf.buf, buf.len);
@@ -392,7 +393,7 @@ static int batch_objects(struct batch_options *opt)
         * sha1_object_info_extended for each object.
         */
        memset(&data, 0, sizeof(data));
-       opt->format.cat_file_data = &data;
+       opt->format.is_cat_file = 1;
        opt->format.all_objects = opt->all_objects;
        verify_ref_format(&opt->format);
 
diff --git a/ref-filter.c b/ref-filter.c
index 104cd6aef0102..cc70bcf2bb8b1 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -100,7 +100,7 @@ static struct used_atom {
        } u;
 } *used_atom;
 static int used_atom_cnt, need_tagged, need_symref;
-struct expand_data *cat_file_info;
+struct expand_data cat_file_info;
 
 static void color_atom_parser(const struct ref_format *format, struct 
used_atom *atom, const char *color_value)
 {
@@ -255,9 +255,9 @@ static void objectname_atom_parser(const struct ref_format 
*format, struct used_
 static void objectsize_atom_parser(const struct ref_format *format, struct 
used_atom *atom, const char *arg)
 {
        if (!arg)
-               cat_file_info->info.sizep = &cat_file_info->size;
+               cat_file_info.info.sizep = &cat_file_info.size;
        else if (!strcmp(arg, "disk"))
-               cat_file_info->info.disk_sizep = &cat_file_info->disk_size;
+               cat_file_info.info.disk_sizep = &cat_file_info.disk_size;
        else
                die(_("urecognized %%(objectsize) argument: %s"), arg);
 }
@@ -265,7 +265,7 @@ static void objectsize_atom_parser(const struct ref_format 
*format, struct used_
 static void objecttype_atom_parser(const struct ref_format *format, struct 
used_atom *atom, const char *arg)
 {
        if (!arg)
-               cat_file_info->info.typep = &cat_file_info->type;
+               cat_file_info.info.typep = &cat_file_info.type;
        else
                die(_("urecognized %%(objecttype) argument: %s"), arg);
 }
@@ -273,7 +273,7 @@ static void objecttype_atom_parser(const struct ref_format 
*format, struct used_
 static void deltabase_atom_parser(const struct ref_format *format, struct 
used_atom *atom, const char *arg)
 {
        if (!arg)
-               cat_file_info->info.delta_base_sha1 = 
cat_file_info->delta_base_oid.hash;
+               cat_file_info.info.delta_base_sha1 = 
cat_file_info.delta_base_oid.hash;
        else
                die(_("urecognized %%(deltabase) argument: %s"), arg);
 }
@@ -751,7 +751,7 @@ int verify_ref_format(struct ref_format *format)
 {
        const char *cp, *sp;
 
-       cat_file_info = format->cat_file_data;
+       cat_file_info.is_cat_file = format->is_cat_file;
        format->need_color_reset_at_eol = 0;
        for (cp = format->format; *cp && (sp = find_next(cp)); ) {
                const char *color, *ep = strchr(sp, ')');
@@ -761,7 +761,7 @@ int verify_ref_format(struct ref_format *format)
                        return error(_("malformed format string %s"), sp);
                /* sp points at "%(" and ep points at the closing ")" */
 
-               if (format->cat_file_data)
+               if (cat_file_info.is_cat_file)
                        at = parse_ref_filter_atom(format, valid_cat_file_atom,
                                                   
ARRAY_SIZE(valid_cat_file_atom), sp + 2, ep);
                else {
@@ -775,10 +775,10 @@ int verify_ref_format(struct ref_format *format)
        }
        if (format->need_color_reset_at_eol && !want_color(format->use_color))
                format->need_color_reset_at_eol = 0;
-       if (cat_file_info && format->all_objects) {
+       if (cat_file_info.is_cat_file && format->all_objects) {
                struct object_info empty = OBJECT_INFO_INIT;
-               if (!memcmp(&cat_file_info->info, &empty, sizeof(empty)))
-                       cat_file_info->skip_object_info = 1;
+               if (!memcmp(&cat_file_info.info, &empty, sizeof(empty)))
+                       cat_file_info.skip_object_info = 1;
        }
        return 0;
 }
@@ -1420,18 +1420,20 @@ static const char *get_refname(struct used_atom *atom, 
struct ref_array_item *re
 
 static int check_and_fill_for_cat(struct ref_array_item *ref)
 {
-       if (!cat_file_info->skip_object_info &&
-           sha1_object_info_extended(ref->oid.hash, &cat_file_info->info,
+       if (!cat_file_info.info.typep)
+               cat_file_info.info.typep = &cat_file_info.type;
+       if (!cat_file_info.skip_object_info &&
+           sha1_object_info_extended(ref->oid.hash, &cat_file_info.info,
                                      OBJECT_INFO_LOOKUP_REPLACE) < 0) {
                const char *e = ref->objectname;
                printf("%s missing\n", e ? e : oid_to_hex(&ref->oid));
                fflush(stdout);
                return -1;
        }
-       ref->type = cat_file_info->type;
-       ref->size = cat_file_info->size;
-       ref->disk_size = cat_file_info->disk_size;
-       ref->delta_base_oid = &cat_file_info->delta_base_oid;
+       ref->type = cat_file_info.type;
+       ref->size = cat_file_info.size;
+       ref->disk_size = cat_file_info.disk_size;
+       ref->delta_base_oid = &cat_file_info.delta_base_oid;
        return 0;
 }
 
@@ -1456,7 +1458,7 @@ int populate_value(struct ref_array_item *ref)
                        ref->symref = "";
        }
 
-       if (cat_file_info && check_and_fill_for_cat(ref))
+       if (cat_file_info.is_cat_file && check_and_fill_for_cat(ref))
                return -1;
 
        /* Fill in specials first */
diff --git a/ref-filter.h b/ref-filter.h
index b1c668c12428b..4eaf6d0514502 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -99,6 +99,7 @@ struct expand_data {
         * optimized out.
         */
        unsigned skip_object_info : 1;
+       unsigned is_cat_file : 1;
 };
 
 struct ref_format {
@@ -113,12 +114,8 @@ struct ref_format {
        /* Internal state to ref-filter */
        int need_color_reset_at_eol;
 
-       /*
-        * Helps to move all formatting logic from cat-file to ref-filter,
-        * hopefully would be reduced later.
-        */
-       struct expand_data *cat_file_data;
        unsigned all_objects : 1;
+       unsigned is_cat_file : 1;
 };
 
 #define REF_FORMAT_INIT { NULL, 0, -1 }

--
https://github.com/git/git/pull/452

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