git: update to v2.18.0

Update to git version v2.18.0. Required changes follow upstream commits:

* Convert find_unique_abbrev* to struct object_id
  (aab9583f7b5ea5463eb3f653a0b4ecac7539dc94)
* sha1_file: convert read_sha1_file to struct object_id
  (b4f5aca40e6f77cbabcbf4ff003c3cf30a1830c8)
* sha1_file: convert sha1_object_info* to object_id
  (abef9020e3df87c441c9a3a95f592fce5fa49bb9)
* object-store: move packed_git and packed_git_mru to object store
  (a80d72db2a73174b3f22142eb2014b33696fd795)
* treewide: rename tree to maybe_tree
  (891435d55da80ca3654b19834481205be6bdfe33)

The changed data types required some of our own functions to be converted
to struct object_id:

  ls_item
  print_dir
  print_dir_entry
  print_object
  single_tree_cb
  walk_tree
  write_tree_link

And finally we use new upstream functions that were added for
struct object_id:

  hashcpy     -> oidcpy
  sha1_to_hex -> oid_to_hex

Signed-off-by: Christian Hesse <mail@eworm.de>
Reviewed-by: John Keeping <john@keeping.me.uk>

13 files changed, 71 insertions, 70 deletions

@@ -14,7 +14,7 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 2.17.1
+GIT_VER = 2.18.0
 GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.gz
 INSTALL = install
 COPYTREE = cp -r
-Subproject fc54c1af3ec09bab8b8ea09768c2da4069b7f53
+Subproject 53f9a3e157dbbc901a02ac2c73346d375e24978
@@ -200,7 +200,7 @@ struct taginfo *cgit_parse_tag(struct tag *tag)
         const char *p;
         struct taginfo *ret = NULL;
 
-        data = read_sha1_file(tag->object.oid.hash, &type, &size);
+        data = read_object_file(&tag->object.oid, &type, &size);
         if (!data || type != OBJ_TAG)
                 goto cleanup;
 
@@ -239,7 +239,7 @@ static int load_mmfile(mmfile_t *file, const struct object_id *oid)
                 file->ptr = (char *)"";
                 file->size = 0;
         } else {
-                file->ptr = read_sha1_file(oid->hash, &type,
+                file->ptr = read_object_file(oid, &type,
                                            (unsigned long *)&file->size);
         }
         return 1;
@@ -49,7 +49,7 @@ static void emit_blame_entry_hash(struct blame_entry *ent)
 
         char *detail = emit_suspect_detail(suspect);
         html("<span class='sha1'>");
-        cgit_commit_link(find_unique_abbrev(oid->hash, DEFAULT_ABBREV), detail,
+        cgit_commit_link(find_unique_abbrev(oid, DEFAULT_ABBREV), detail,
                          NULL, ctx.qry.head, oid_to_hex(oid), suspect->path);
         html("</span>");
         free(detail);
@@ -98,7 +98,7 @@ struct walk_tree_context {
         int state;
 };
 
-static void print_object(const unsigned char *sha1, const char *path,
+static void print_object(const struct object_id *oid, const char *path,
                          const char *basename, const char *rev)
 {
         enum object_type type;
@@ -110,17 +110,17 @@ static void print_object(const unsigned char *sha1, const char *path,
         struct blame_origin *o;
         struct blame_entry *ent = NULL;
 
-        type = sha1_object_info(sha1, &size);
+        type = oid_object_info(the_repository, oid, &size);
         if (type == OBJ_BAD) {
                 cgit_print_error_page(404, "Not found", "Bad object name: %s",
-                                      sha1_to_hex(sha1));
+                                      oid_to_hex(oid));
                 return;
         }
 
-        buf = read_sha1_file(sha1, &type, &size);
+        buf = read_object_file(oid, &type, &size);
         if (!buf) {
                 cgit_print_error_page(500, "Internal server error",
-                        "Error reading object %s", sha1_to_hex(sha1));
+                        "Error reading object %s", oid_to_hex(oid));
                 return;
         }
 
@@ -144,7 +144,7 @@ static void print_object(const unsigned char *sha1, const char *path,
         cgit_set_title_from_path(path);
 
         cgit_print_layout_start();
-        htmlf("blob: %s (", sha1_to_hex(sha1));
+        htmlf("blob: %s (", oid_to_hex(oid));
         cgit_plain_link("plain", NULL, NULL, ctx.qry.head, rev, path);
         html(") (");
         cgit_tree_link("tree", NULL, NULL, ctx.qry.head, rev, path);
@@ -218,7 +218,7 @@ cleanup:
         free(buf);
 }
 
-static int walk_tree(const unsigned char *sha1, struct strbuf *base,
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
                      const char *pathname, unsigned mode, int stage,
                      void *cbdata)
 {
@@ -229,7 +229,7 @@ static int walk_tree(const unsigned char *sha1, struct strbuf *base,
                         struct strbuf buffer = STRBUF_INIT;
                         strbuf_addbuf(&buffer, base);
                         strbuf_addstr(&buffer, pathname);
-                        print_object(sha1, buffer.buf, pathname,
+                        print_object(oid, buffer.buf, pathname,
                                      walk_tree_ctx->curr_rev);
                         strbuf_release(&buffer);
                         walk_tree_ctx->state = 1;
@@ -289,7 +289,7 @@ void cgit_print_blame(void)
         walk_tree_ctx.match_baselen = (path_items.match) ?
                                        basedir_len(path_items.match) : -1;
 
-        read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree,
+        read_tree_recursive(commit->maybe_tree, "", 0, 0, &paths, walk_tree,
                 &walk_tree_ctx);
         if (!walk_tree_ctx.state)
                 cgit_print_error_page(404, "Not found", "Not found");
@@ -18,7 +18,7 @@ struct walk_tree_context {
         unsigned int file_only:1;
 };
 
-static int walk_tree(const unsigned char *sha1, struct strbuf *base,
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
                 const char *pathname, unsigned mode, int stage, void *cbdata)
 {
         struct walk_tree_context *walk_tree_ctx = cbdata;
@@ -28,7 +28,7 @@ static int walk_tree(const unsigned char *sha1, struct strbuf *base,
         if (strncmp(base->buf, walk_tree_ctx->match_path, base->len)
                 || strcmp(walk_tree_ctx->match_path + base->len, pathname))
                 return READ_TREE_RECURSIVE;
-        hashcpy(walk_tree_ctx->matched_oid->hash, sha1);
+        oidcpy(walk_tree_ctx->matched_oid, oid);
         walk_tree_ctx->found_path = 1;
         return 0;
 }
@@ -54,9 +54,9 @@ int cgit_ref_path_exists(const char *path, const char *ref, int file_only)
 
         if (get_oid(ref, &oid))
                 goto done;
-        if (sha1_object_info(oid.hash, &size) != OBJ_COMMIT)
+        if (oid_object_info(the_repository, &oid, &size) != OBJ_COMMIT)
                 goto done;
-        read_tree_recursive(lookup_commit_reference(&oid)->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+        read_tree_recursive(lookup_commit_reference(&oid)->maybe_tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
 
 done:
         free(path_items.match);
@@ -87,17 +87,17 @@ int cgit_print_file(char *path, const char *head, int file_only)
 
         if (get_oid(head, &oid))
                 return -1;
-        type = sha1_object_info(oid.hash, &size);
+        type = oid_object_info(the_repository, &oid, &size);
         if (type == OBJ_COMMIT) {
                 commit = lookup_commit_reference(&oid);
-                read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+                read_tree_recursive(commit->maybe_tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
                 if (!walk_tree_ctx.found_path)
                         return -1;
-                type = sha1_object_info(oid.hash, &size);
+                type = oid_object_info(the_repository, &oid, &size);
         }
         if (type == OBJ_BAD)
                 return -1;
-        buf = read_sha1_file(oid.hash, &type, &size);
+        buf = read_object_file(&oid, &type, &size);
         if (!buf)
                 return -1;
         buf[size] = '\0';
@@ -142,12 +142,12 @@ void cgit_print_blob(const char *hex, char *path, const char *head, int file_onl
                 }
         }
 
-        type = sha1_object_info(oid.hash, &size);
+        type = oid_object_info(the_repository, &oid, &size);
 
         if ((!hex) && type == OBJ_COMMIT && path) {
                 commit = lookup_commit_reference(&oid);
-                read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
-                type = sha1_object_info(oid.hash, &size);
+                read_tree_recursive(commit->maybe_tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+                type = oid_object_info(the_repository, &oid, &size);
         }
 
         if (type == OBJ_BAD) {
@@ -156,7 +156,7 @@ void cgit_print_blob(const char *hex, char *path, const char *head, int file_onl
                 return;
         }
 
-        buf = read_sha1_file(oid.hash, &type, &size);
+        buf = read_object_file(&oid, &type, &size);
         if (!buf) {
                 cgit_print_error_page(500, "Internal server error",
                                 "Error reading object %s", hex);
@@ -12,6 +12,7 @@
 #include "html.h"
 #include "ui-shared.h"
 #include "packfile.h"
+#include "object-store.h"
 
 static int print_ref_info(const char *refname, const struct object_id *oid,
                           int flags, void *cb_data)
@@ -38,8 +39,8 @@ static void print_pack_info(void)
         ctx.page.mimetype = "text/plain";
         ctx.page.filename = "objects/info/packs";
         cgit_print_http_headers();
-        prepare_packed_git();
-        for (pack = packed_git; pack; pack = pack->next) {
+        reprepare_packed_git(the_repository);
+        for (pack = get_packed_git(the_repository); pack; pack = pack->next) {
                 if (pack->pack_local) {
                         offset = strrchr(pack->pack_name, '/');
                         if (offset && offset[1] != '\0')
@@ -78,7 +78,7 @@ void cgit_print_commit(char *hex, const char *prefix)
         html(")</td></tr>\n");
         html("<tr><th>tree</th><td colspan='2' class='sha1'>");
         tmp = xstrdup(hex);
-        cgit_tree_link(oid_to_hex(&commit->tree->object.oid), NULL, NULL,
+        cgit_tree_link(oid_to_hex(&commit->maybe_tree->object.oid), NULL, NULL,
                        ctx.qry.head, tmp, NULL);
         if (prefix) {
                 html(" /");
@@ -258,8 +258,8 @@ static void header(const struct object_id *oid1, char *path1, int mode1,
                 htmlf("<br/>deleted file mode %.6o", mode1);
 
         if (!subproject) {
-                abbrev1 = xstrdup(find_unique_abbrev(oid1->hash, DEFAULT_ABBREV));
-                abbrev2 = xstrdup(find_unique_abbrev(oid2->hash, DEFAULT_ABBREV));
+                abbrev1 = xstrdup(find_unique_abbrev(oid1, DEFAULT_ABBREV));
+                abbrev2 = xstrdup(find_unique_abbrev(oid2, DEFAULT_ABBREV));
                 htmlf("<br/>index %s..%s", abbrev1, abbrev2);
                 free(abbrev1);
                 free(abbrev2);
@@ -413,7 +413,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
                         "Bad commit: %s", oid_to_hex(new_rev_oid));
                 return;
         }
-        new_tree_oid = &commit->tree->object.oid;
+        new_tree_oid = &commit->maybe_tree->object.oid;
 
         if (old_rev) {
                 if (get_oid(old_rev, old_rev_oid)) {
@@ -434,7 +434,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
                                 "Bad commit: %s", oid_to_hex(old_rev_oid));
                         return;
                 }
-                old_tree_oid = &commit2->tree->object.oid;
+                old_tree_oid = &commit2->maybe_tree->object.oid;
         } else {
                 old_tree_oid = NULL;
         }
@@ -153,8 +153,8 @@ static int show_commit(struct commit *commit, struct rev_info *revs)
         rem_lines = 0;
 
         revs->diffopt.flags.recursive = 1;
-        diff_tree_oid(&parent->tree->object.oid,
-                      &commit->tree->object.oid,
+        diff_tree_oid(&parent->maybe_tree->object.oid,
+                      &commit->maybe_tree->object.oid,
                       "", &revs->diffopt);
         diffcore_std(&revs->diffopt);
 
@@ -16,19 +16,19 @@ struct walk_tree_context {
         int match;
 };
 
-static int print_object(const unsigned char *sha1, const char *path)
+static int print_object(const struct object_id *oid, const char *path)
 {
         enum object_type type;
         char *buf, *mimetype;
         unsigned long size;
 
-        type = sha1_object_info(sha1, &size);
+        type = oid_object_info(the_repository, oid, &size);
         if (type == OBJ_BAD) {
                 cgit_print_error_page(404, "Not found", "Not found");
                 return 0;
         }
 
-        buf = read_sha1_file(sha1, &type, &size);
+        buf = read_object_file(oid, &type, &size);
         if (!buf) {
                 cgit_print_error_page(404, "Not found", "Not found");
                 return 0;
@@ -57,7 +57,7 @@ static int print_object(const unsigned char *sha1, const char *path)
         }
         ctx.page.filename = path;
         ctx.page.size = size;
-        ctx.page.etag = sha1_to_hex(sha1);
+        ctx.page.etag = oid_to_hex(oid);
         cgit_print_http_headers();
         html_raw(buf, size);
         free(mimetype);
@@ -73,7 +73,7 @@ static char *buildpath(const char *base, int baselen, const char *path)
                 return fmtalloc("%.*s/", baselen, base);
 }
 
-static void print_dir(const unsigned char *sha1, const char *base,
+static void print_dir(const struct object_id *oid, const char *base,
                       int baselen, const char *path)
 {
         char *fullpath, *slash;
@@ -81,7 +81,7 @@ static void print_dir(const unsigned char *sha1, const char *base,
 
         fullpath = buildpath(base, baselen, path);
         slash = (fullpath[0] == '/' ? "" : "/");
-        ctx.page.etag = sha1_to_hex(sha1);
+        ctx.page.etag = oid_to_hex(oid);
         cgit_print_http_headers();
         htmlf("<html><head><title>%s", slash);
         html_txt(fullpath);
@@ -106,7 +106,7 @@ static void print_dir(const unsigned char *sha1, const char *base,
         free(fullpath);
 }
 
-static void print_dir_entry(const unsigned char *sha1, const char *base,
+static void print_dir_entry(const struct object_id *oid, const char *base,
                             int baselen, const char *path, unsigned mode)
 {
         char *fullpath;
@@ -116,7 +116,7 @@ static void print_dir_entry(const unsigned char *sha1, const char *base,
                 fullpath[strlen(fullpath) - 1] = 0;
         html("  <li>");
         if (S_ISGITLINK(mode)) {
-                cgit_submodule_link(NULL, fullpath, sha1_to_hex(sha1));
+                cgit_submodule_link(NULL, fullpath, oid_to_hex(oid));
         } else
                 cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
                                 fullpath);
@@ -129,22 +129,22 @@ static void print_dir_tail(void)
         html(" </ul>\n</body></html>\n");
 }
 
-static int walk_tree(const unsigned char *sha1, struct strbuf *base,
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
                 const char *pathname, unsigned mode, int stage, void *cbdata)
 {
         struct walk_tree_context *walk_tree_ctx = cbdata;
 
         if (base->len == walk_tree_ctx->match_baselen) {
                 if (S_ISREG(mode) || S_ISLNK(mode)) {
-                        if (print_object(sha1, pathname))
+                        if (print_object(oid, pathname))
                                 walk_tree_ctx->match = 1;
                 } else if (S_ISDIR(mode)) {
-                        print_dir(sha1, base->buf, base->len, pathname);
+                        print_dir(oid, base->buf, base->len, pathname);
                         walk_tree_ctx->match = 2;
                         return READ_TREE_RECURSIVE;
                 }
         } else if (base->len < INT_MAX && (int)base->len > walk_tree_ctx->match_baselen) {
-                print_dir_entry(sha1, base->buf, base->len, pathname, mode);
+                print_dir_entry(oid, base->buf, base->len, pathname, mode);
                 walk_tree_ctx->match = 2;
         } else if (S_ISDIR(mode)) {
                 return READ_TREE_RECURSIVE;
@@ -193,12 +193,12 @@ void cgit_print_plain(void)
         if (!path_items.match) {
                 path_items.match = "";
                 walk_tree_ctx.match_baselen = -1;
-                print_dir(commit->tree->object.oid.hash, "", 0, "");
+                print_dir(&commit->maybe_tree->object.oid, "", 0, "");
                 walk_tree_ctx.match = 2;
         }
         else
                 walk_tree_ctx.match_baselen = basedir_len(path_items.match);
-        read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+        read_tree_recursive(commit->maybe_tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
         if (!walk_tree_ctx.match)
                 cgit_print_error_page(404, "Not found", "Not found");
         else if (walk_tree_ctx.match == 2)
@@ -174,7 +174,7 @@ static int write_sig(const struct cgit_snapshot_format *format,
                 return 0;
         }
 
-        buf = read_sha1_file(note->hash, &type, &size);
+        buf = read_object_file(note, &type, &size);
         if (!buf) {
                 cgit_print_error_page(404, "Not found", "Not found");
                 return 0;
@@ -84,30 +84,30 @@ static void print_binary_buffer(char *buf, unsigned long size)
         html("</table>\n");
 }
 
-static void print_object(const unsigned char *sha1, char *path, const char *basename, const char *rev)
+static void print_object(const struct object_id *oid, char *path, const char *basename, const char *rev)
 {
         enum object_type type;
         char *buf;
         unsigned long size;
 
-        type = sha1_object_info(sha1, &size);
+        type = oid_object_info(the_repository, oid, &size);
         if (type == OBJ_BAD) {
                 cgit_print_error_page(404, "Not found",
-                        "Bad object name: %s", sha1_to_hex(sha1));
+                        "Bad object name: %s", oid_to_hex(oid));
                 return;
         }
 
-        buf = read_sha1_file(sha1, &type, &size);
+        buf = read_object_file(oid, &type, &size);
         if (!buf) {
                 cgit_print_error_page(500, "Internal server error",
-                        "Error reading object %s", sha1_to_hex(sha1));
+                        "Error reading object %s", oid_to_hex(oid));
                 return;
         }
 
         cgit_set_title_from_path(path);
 
         cgit_print_layout_start();
-        htmlf("blob: %s (", sha1_to_hex(sha1));
+        htmlf("blob: %s (", oid_to_hex(oid));
         cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
                         rev, path);
         if (ctx.cfg.enable_blame) {
@@ -138,7 +138,7 @@ struct single_tree_ctx {
         size_t count;
 };
 
-static int single_tree_cb(const unsigned char *sha1, struct strbuf *base,
+static int single_tree_cb(const struct object_id *oid, struct strbuf *base,
                           const char *pathname, unsigned mode, int stage,
                           void *cbdata)
 {
@@ -153,12 +153,12 @@ static int single_tree_cb(const unsigned char *sha1, struct strbuf *base,
         }
 
         ctx->name = xstrdup(pathname);
-        hashcpy(ctx->oid.hash, sha1);
+        oidcpy(&ctx->oid, oid);
         strbuf_addf(ctx->path, "/%s", pathname);
         return 0;
 }
 
-static void write_tree_link(const unsigned char *sha1, char *name,
+static void write_tree_link(const struct object_id *oid, char *name,
                             char *rev, struct strbuf *fullpath)
 {
         size_t initial_length = fullpath->len;
@@ -171,7 +171,7 @@ static void write_tree_link(const unsigned char *sha1, char *name,
                 .nr = 0
         };
 
-        hashcpy(tree_ctx.oid.hash, sha1);
+        oidcpy(&tree_ctx.oid, oid);
 
         while (tree_ctx.count == 1) {
                 cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head, rev,
@@ -198,7 +198,7 @@ static void write_tree_link(const unsigned char *sha1, char *name,
         strbuf_setlen(fullpath, initial_length);
 }
 
-static int ls_item(const unsigned char *sha1, struct strbuf *base,
+static int ls_item(const struct object_id *oid, struct strbuf *base,
                 const char *pathname, unsigned mode, int stage, void *cbdata)
 {
         struct walk_tree_context *walk_tree_ctx = cbdata;
@@ -213,11 +213,11 @@ static int ls_item(const unsigned char *sha1, struct strbuf *base,
                     ctx.qry.path ? "/" : "", name);
 
         if (!S_ISGITLINK(mode)) {
-                type = sha1_object_info(sha1, &size);
+                type = oid_object_info(the_repository, oid, &size);
                 if (type == OBJ_BAD) {
                         htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
                               name,
-                              sha1_to_hex(sha1));
+                              oid_to_hex(oid));
                         free(name);
                         return 0;
                 }
@@ -227,9 +227,9 @@ static int ls_item(const unsigned char *sha1, struct strbuf *base,
         cgit_print_filemode(mode);
         html("</td><td>");
         if (S_ISGITLINK(mode)) {
-                cgit_submodule_link("ls-mod", fullpath.buf, sha1_to_hex(sha1));
+                cgit_submodule_link("ls-mod", fullpath.buf, oid_to_hex(oid));
         } else if (S_ISDIR(mode)) {
-                write_tree_link(sha1, name, walk_tree_ctx->curr_rev,
+                write_tree_link(oid, name, walk_tree_ctx->curr_rev,
                                 &fullpath);
         } else {
                 char *ext = strrchr(name, '.');
@@ -289,7 +289,7 @@ static void ls_tree(const struct object_id *oid, char *path, struct walk_tree_co
         tree = parse_tree_indirect(oid);
         if (!tree) {
                 cgit_print_error_page(404, "Not found",
-                        "Not a tree object: %s", sha1_to_hex(oid->hash));
+                        "Not a tree object: %s", oid_to_hex(oid));
                 return;
         }
 
@@ -299,7 +299,7 @@ static void ls_tree(const struct object_id *oid, char *path, struct walk_tree_co
 }
 
 
-static int walk_tree(const unsigned char *sha1, struct strbuf *base,
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
                 const char *pathname, unsigned mode, int stage, void *cbdata)
 {
         struct walk_tree_context *walk_tree_ctx = cbdata;
@@ -320,12 +320,12 @@ static int walk_tree(const unsigned char *sha1, struct strbuf *base,
                         return READ_TREE_RECURSIVE;
                 } else {
                         walk_tree_ctx->state = 2;
-                        print_object(sha1, buffer.buf, pathname, walk_tree_ctx->curr_rev);
+                        print_object(oid, buffer.buf, pathname, walk_tree_ctx->curr_rev);
                         strbuf_release(&buffer);
                         return 0;
                 }
         }
-        ls_item(sha1, base, pathname, mode, stage, walk_tree_ctx);
+        ls_item(oid, base, pathname, mode, stage, walk_tree_ctx);
         return 0;
 }
 
@@ -369,11 +369,11 @@ void cgit_print_tree(const char *rev, char *path)
         walk_tree_ctx.curr_rev = xstrdup(rev);
 
         if (path == NULL) {
-                ls_tree(&commit->tree->object.oid, NULL, &walk_tree_ctx);
+                ls_tree(&commit->maybe_tree->object.oid, NULL, &walk_tree_ctx);
                 goto cleanup;
         }
 
-        read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+        read_tree_recursive(commit->maybe_tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
         if (walk_tree_ctx.state == 1)
                 ls_tail();
         else if (walk_tree_ctx.state == 2)