memcmp() is replaced with starts_with() when comparing strings from the
beginning. starts_with() looks nicer and it saves the extra argument of
the length of the comparing string.
Signed-off-by: Quint Guvernator <quintus.public@xxxxxxxxx>
---
builtin/apply.c | 10 +++++-----
builtin/cat-file.c | 2 +-
builtin/commit-tree.c | 2 +-
builtin/for-each-ref.c | 2 +-
builtin/get-tar-commit-id.c | 2 +-
builtin/mailinfo.c | 10 +++++-----
builtin/mktag.c | 8 ++++----
builtin/patch-id.c | 18 +++++++++---------
commit.c | 18 +++++++++---------
connect.c | 8 ++++----
contrib/convert-objects/convert-objects.c | 6 +++---
convert.c | 2 +-
credential-cache.c | 2 +-
fetch-pack.c | 2 +-
fsck.c | 8 ++++----
http-walker.c | 4 ++--
imap-send.c | 2 +-
pack-write.c | 2 +-
path.c | 2 +-
refs.c | 2 +-
remote.c | 2 +-
submodule.c | 2 +-
transport.c | 2 +-
xdiff-interface.c | 2 +-
24 files changed, 60 insertions(+), 60 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index a7e72d5..8f21957 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -846,8 +846,8 @@ static int has_epoch_timestamp(const char *nameline)
* YYYY-MM-DD hh:mm:ss must be from either 1969-12-31
* (west of GMT) or 1970-01-01 (east of GMT)
*/
- if ((zoneoffset < 0 && memcmp(timestamp, "1969-12-31", 10)) ||
- (0 <= zoneoffset && memcmp(timestamp, "1970-01-01", 10)))
+ if ((zoneoffset < 0 && starts_with(timestamp, "1969-12-31")) ||
+ (0 <= zoneoffset && starts_with(timestamp, "1970-01-01")))
return 0;
hourminute = (strtol(timestamp + 11, NULL, 10) * 60 +
@@ -1631,7 +1631,7 @@ static int parse_fragment(const char *line, unsigned long size,
* l10n of "\ No newline..." is at least that long.
*/
case '\\':
- if (len < 12 || memcmp(line, "\\ ", 2))
+ if (len < 12 || starts_with(line, "\\ "))
return -1;
break;
}
@@ -1646,7 +1646,7 @@ static int parse_fragment(const char *line, unsigned long size,
* it in the above loop because we hit oldlines == newlines == 0
* before seeing it.
*/
- if (12 < size && !memcmp(line, "\\ ", 2))
+ if (12 < size && !starts_with(line, "\\ "))
offset += linelen(line, size);
patch->lines_added += added;
@@ -1673,7 +1673,7 @@ static int parse_single_patch(const char *line, unsigned long size, struct patch
unsigned long oldlines = 0, newlines = 0, context = 0;
struct fragment **fragp = &patch->fragments;
- while (size > 4 && !memcmp(line, "@@ -", 4)) {
+ while (size > 4 && !starts_with(line, "@@ -")) {
struct fragment *fragment;
int len;
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index d5a93e0..be83345 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -82,7 +82,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
enum object_type type;
unsigned long size;
char *buffer = read_sha1_file(sha1, &type, &size);
- if (memcmp(buffer, "object ", 7) ||
+ if (starts_with(buffer, "object ") ||
get_sha1_hex(buffer + 7, blob_sha1))
die("%s not a valid tag", sha1_to_hex(sha1));
free(buffer);
diff --git a/builtin/commit-tree.c b/builtin/commit-tree.c
index 987a4c3..2d995a2 100644
--- a/builtin/commit-tree.c
+++ b/builtin/commit-tree.c
@@ -66,7 +66,7 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix)
continue;
}
- if (!memcmp(arg, "-S", 2)) {
+ if (!starts_with(arg, "-S")) {
sign_commit = arg + 2;
continue;
}
diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 51798b4..be14d71 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -193,7 +193,7 @@ static int verify_format(const char *format)
at = parse_atom(sp + 2, ep);
cp = ep + 1;
- if (!memcmp(used_atom[at], "color:", 6))
+ if (!starts_with(used_atom[at], "color:"))
need_color_reset_at_eol = !!strcmp(used_atom[at], color_reset);
}
return 0;
diff --git a/builtin/get-tar-commit-id.c b/builtin/get-tar-commit-id.c
index aa72596..d645525 100644
--- a/builtin/get-tar-commit-id.c
+++ b/builtin/get-tar-commit-id.c
@@ -29,7 +29,7 @@ int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix)
die("git get-tar-commit-id: read error");
if (header->typeflag[0] != 'g')
return 1;
- if (memcmp(content, "52 comment=", 11))
+ if (starts_with(content, "52 comment="))
return 1;
n = write_in_full(1, content + 11, 41);
diff --git a/builtin/mailinfo.c b/builtin/mailinfo.c
index 2c3cd8e..63f0230 100644
--- a/builtin/mailinfo.c
+++ b/builtin/mailinfo.c
@@ -626,7 +626,7 @@ static int handle_boundary(void)
strbuf_addch(&newline, '\n');
again:
if (line.len >= (*content_top)->len + 2 &&
- !memcmp(line.buf + (*content_top)->len, "--", 2)) {
+ !starts_with(line.buf + (*content_top)->len, "--")) {
/* we hit an end boundary */
/* pop the current boundary off the stack */
strbuf_release(*content_top);
@@ -727,8 +727,8 @@ static int is_scissors_line(const struct strbuf *line)
continue;
}
if (i + 1 < len &&
- (!memcmp(buf + i, ">8", 2) || !memcmp(buf + i, "8<", 2) ||
- !memcmp(buf + i, ">%", 2) || !memcmp(buf + i, "%<", 2))) {
+ (!starts_with(buf + i, ">8") || !starts_with(buf + i, "8<") ||
+ !starts_with(buf + i, ">%") || !starts_with(buf + i, "%<"))) {
in_perforation = 1;
perforation += 2;
scissors += 2;
@@ -929,13 +929,13 @@ static void handle_info(void)
else
continue;
- if (!memcmp(header[i], "Subject", 7)) {
+ if (!starts_with(header[i], "Subject")) {
if (!keep_subject) {
cleanup_subject(hdr);
cleanup_space(hdr);
}
output_header_lines(fout, "Subject", hdr);
- } else if (!memcmp(header[i], "From", 4)) {
+ } else if (!starts_with(header[i], "From")) {
cleanup_space(hdr);
handle_from(hdr);
fprintf(fout, "Author: %s\n", name.buf);
diff --git a/builtin/mktag.c b/builtin/mktag.c
index 640ab64..54ec4e1 100644
--- a/builtin/mktag.c
+++ b/builtin/mktag.c
@@ -49,7 +49,7 @@ static int verify_tag(char *buffer, unsigned long size)
/* Verify object line */
object = buffer;
- if (memcmp(object, "object ", 7))
+ if (starts_with(object, "object "))
return error("char%d: does not start with \"object \"", 0);
if (get_sha1_hex(object + 7, sha1))
@@ -57,7 +57,7 @@ static int verify_tag(char *buffer, unsigned long size)
/* Verify type line */
type_line = object + 48;
- if (memcmp(type_line - 1, "\ntype ", 6))
+ if (starts_with(type_line - 1, "\ntype "))
return error("char%d: could not find \"\\ntype \"", 47);
/* Verify tag-line */
@@ -66,7 +66,7 @@ static int verify_tag(char *buffer, unsigned long size)
return error("char%"PRIuMAX": could not find next \"\\n\"",
(uintmax_t) (type_line - buffer));
tag_line++;
- if (memcmp(tag_line, "tag ", 4) || tag_line[4] == '\n')
+ if (starts_with(tag_line, "tag ") || tag_line[4] == '\n')
return error("char%"PRIuMAX": no \"tag \" found",
(uintmax_t) (tag_line - buffer));
@@ -98,7 +98,7 @@ static int verify_tag(char *buffer, unsigned long size)
/* Verify the tagger line */
tagger_line = tag_line;
- if (memcmp(tagger_line, "tagger ", 7))
+ if (starts_with(tagger_line, "tagger "))
return error("char%"PRIuMAX": could not find \"tagger \"",
(uintmax_t) (tagger_line - buffer));
diff --git a/builtin/patch-id.c b/builtin/patch-id.c
index 3cfe02d..cc10f1d 100644
--- a/builtin/patch-id.c
+++ b/builtin/patch-id.c
@@ -66,13 +66,13 @@ static int get_one_patchid(unsigned char *next_sha1, git_SHA_CTX *ctx, struct st
char *p = line;
int len;
- if (!memcmp(line, "diff-tree ", 10))
+ if (!starts_with(line, "diff-tree "))
p += 10;
- else if (!memcmp(line, "commit ", 7))
+ else if (!starts_with(line, "commit "))
p += 7;
- else if (!memcmp(line, "From ", 5))
+ else if (!starts_with(line, "From "))
p += 5;
- else if (!memcmp(line, "\\ ", 2) && 12 < strlen(line))
+ else if (!starts_with(line, "\\ ") && 12 < strlen(line))
continue;
if (!get_sha1_hex(p, next_sha1)) {
@@ -81,14 +81,14 @@ static int get_one_patchid(unsigned char *next_sha1, git_SHA_CTX *ctx, struct st
}
/* Ignore commit comments */
- if (!patchlen && memcmp(line, "diff ", 5))
+ if (!patchlen && starts_with(line, "diff "))
continue;
/* Parsing diff header? */
if (before == -1) {
- if (!memcmp(line, "index ", 6))
+ if (!starts_with(line, "index "))
continue;
- else if (!memcmp(line, "--- ", 4))
+ else if (!starts_with(line, "--- "))
before = after = 1;
else if (!isalpha(line[0]))
break;
@@ -96,14 +96,14 @@ static int get_one_patchid(unsigned char *next_sha1, git_SHA_CTX *ctx, struct st
/* Looking for a valid hunk header? */
if (before == 0 && after == 0) {
- if (!memcmp(line, "@@ -", 4)) {
+ if (!starts_with(line, "@@ -")) {
/* Parse next hunk, but ignore line numbers. */
scan_hunk_header(line, &before, &after);
continue;
}
/* Split at the end of the patch. */
- if (memcmp(line, "diff ", 5))
+ if (starts_with(line, "diff "))
break;
/* Else we're parsing another header. */
diff --git a/commit.c b/commit.c
index 6bf4fe0..b259c17 100644
--- a/commit.c
+++ b/commit.c
@@ -90,13 +90,13 @@ static unsigned long parse_commit_date(const char *buf, const char *tail)
if (buf + 6 >= tail)
return 0;
- if (memcmp(buf, "author", 6))
+ if (starts_with(buf, "author"))
return 0;
while (buf < tail && *buf++ != '\n')
/* nada */;
if (buf + 9 >= tail)
return 0;
- if (memcmp(buf, "committer", 9))
+ if (starts_with(buf, "committer"))
return 0;
while (buf < tail && *buf++ != '>')
/* nada */;
@@ -269,7 +269,7 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
return 0;
item->object.parsed = 1;
tail += size;
- if (tail <= bufptr + 46 || memcmp(bufptr, "tree ", 5) || bufptr[45] != '\n')
+ if (tail <= bufptr + 46 || starts_with(bufptr, "tree ") || bufptr[45] != '\n')
return error("bogus commit object %s", sha1_to_hex(item->object.sha1));
if (get_sha1_hex(bufptr + 5, parent) < 0)
return error("bad tree pointer in commit %s",
@@ -279,7 +279,7 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
pptr = &item->parents;
graft = lookup_commit_graft(item->object.sha1);
- while (bufptr + 48 < tail && !memcmp(bufptr, "parent ", 7)) {
+ while (bufptr + 48 < tail && !starts_with(bufptr, "parent ")) {
struct commit *new_parent;
if (tail <= bufptr + 48 ||
@@ -1279,11 +1279,11 @@ struct commit_extra_header *read_commit_extra_headers(struct commit *commit,
static inline int standard_header_field(const char *field, size_t len)
{
- return ((len == 4 && !memcmp(field, "tree ", 5)) ||
- (len == 6 && !memcmp(field, "parent ", 7)) ||
- (len == 6 && !memcmp(field, "author ", 7)) ||
- (len == 9 && !memcmp(field, "committer ", 10)) ||
- (len == 8 && !memcmp(field, "encoding ", 9)));
+ return ((len == 4 && !starts_with(field, "tree ")) ||
+ (len == 6 && !starts_with(field, "parent ")) ||
+ (len == 6 && !starts_with(field, "author ")) ||
+ (len == 9 && !starts_with(field, "committer ")) ||
+ (len == 8 && !starts_with(field, "encoding ")));
}
static int excluded_header_field(const char *field, size_t len, const char **exclude)
diff --git a/connect.c b/connect.c
index 4150412..4cb1c7c 100644
--- a/connect.c
+++ b/connect.c
@@ -18,7 +18,7 @@ static int check_ref(const char *name, int len, unsigned int flags)
if (!flags)
return 1;
- if (len < 5 || memcmp(name, "refs/", 5))
+ if (len < 5 || starts_with(name, "refs/"))
return 0;
/* Skip the "refs/" part */
@@ -30,11 +30,11 @@ static int check_ref(const char *name, int len, unsigned int flags)
return 0;
/* REF_HEADS means that we want regular branch heads */
- if ((flags & REF_HEADS) && !memcmp(name, "heads/", 6))
+ if ((flags & REF_HEADS) && !starts_with(name, "heads/"))
return 1;
/* REF_TAGS means that we want tags */
- if ((flags & REF_TAGS) && !memcmp(name, "tags/", 5))
+ if ((flags & REF_TAGS) && !starts_with(name, "tags/"))
return 1;
/* All type bits clear means that we are ok with anything */
@@ -514,7 +514,7 @@ static int git_proxy_command_options(const char *var, const char *value,
if (0 <= matchlen) {
/* core.gitproxy = none for kernel.org */
if (matchlen == 4 &&
- !memcmp(value, "none", 4))
+ !starts_with(value, "none"))
matchlen = 0;
git_proxy_command = xmemdupz(value, matchlen);
}
diff --git a/contrib/convert-objects/convert-objects.c b/contrib/convert-objects/convert-objects.c
index f3b57bf..72914e1 100644
--- a/contrib/convert-objects/convert-objects.c
+++ b/contrib/convert-objects/convert-objects.c
@@ -245,7 +245,7 @@ static void convert_date(void *buffer, unsigned long size, unsigned char *result
size -= 46;
/* "parent <sha1>\n" */
- while (!memcmp(buffer, "parent ", 7)) {
+ while (!starts_with(buffer, "parent ")) {
memcpy(new + newlen, buffer, 48);
newlen += 48;
buffer = (char *) buffer + 48;
@@ -270,11 +270,11 @@ static void convert_commit(void *buffer, unsigned long size, unsigned char *resu
void *orig_buffer = buffer;
unsigned long orig_size = size;
- if (memcmp(buffer, "tree ", 5))
+ if (starts_with(buffer, "tree "))
die("Bad commit '%s'", (char *) buffer);
convert_ascii_sha1((char *) buffer + 5);
buffer = (char *) buffer + 46; /* "tree " + "hex sha1" + "\n" */
- while (!memcmp(buffer, "parent ", 7)) {
+ while (!starts_with(buffer, "parent ")) {
convert_ascii_sha1((char *) buffer + 7);
buffer = (char *) buffer + 48;
}
diff --git a/convert.c b/convert.c
index ab80b72..8f0b1bd 100644
--- a/convert.c
+++ b/convert.c
@@ -543,7 +543,7 @@ static int ident_to_git(const char *path, const char *src, size_t len,
len -= dollar + 1 - src;
src = dollar + 1;
- if (len > 3 && !memcmp(src, "Id:", 3)) {
+ if (len > 3 && !starts_with(src, "Id:")) {
dollar = memchr(src + 3, '$', len - 3);
if (!dollar)
break;
diff --git a/credential-cache.c b/credential-cache.c
index 9a03792..0b55946 100644
--- a/credential-cache.c
+++ b/credential-cache.c
@@ -54,7 +54,7 @@ static void spawn_daemon(const char *socket)
r = read_in_full(daemon.out, buf, sizeof(buf));
if (r < 0)
die_errno("unable to read result code from cache daemon");
- if (r != 3 || memcmp(buf, "ok\n", 3))
+ if (r != 3 || starts_with(buf, "ok\n"))
die("cache daemon did not start: %.*s", r, buf);
close(daemon.out);
}
diff --git a/fetch-pack.c b/fetch-pack.c
index f061f1f..10abe9e 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -506,7 +506,7 @@ static void filter_refs(struct fetch_pack_args *args,
int keep = 0;
next = ref->next;
- if (!memcmp(ref->name, "refs/", 5) &&
+ if (!starts_with(ref->name, "refs/") &&
check_refname_format(ref->name, 0))
; /* trash */
else {
diff --git a/fsck.c b/fsck.c
index 99c0497..10b70ca 100644
--- a/fsck.c
+++ b/fsck.c
@@ -290,12 +290,12 @@ static int fsck_commit(struct commit *commit, fsck_error error_func)
if (commit->date == ULONG_MAX)
return error_func(&commit->object, FSCK_ERROR, "invalid author/committer line");
- if (memcmp(buffer, "tree ", 5))
+ if (starts_with(buffer, "tree "))
return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'tree' line");
if (get_sha1_hex(buffer+5, tree_sha1) || buffer[45] != '\n')
return error_func(&commit->object, FSCK_ERROR, "invalid 'tree' line format - bad sha1");
buffer += 46;
- while (!memcmp(buffer, "parent ", 7)) {
+ while (!starts_with(buffer, "parent ")) {
if (get_sha1_hex(buffer+7, sha1) || buffer[47] != '\n')
return error_func(&commit->object, FSCK_ERROR, "invalid 'parent' line format - bad sha1");
buffer += 48;
@@ -322,13 +322,13 @@ static int fsck_commit(struct commit *commit, fsck_error error_func)
if (p || parents)
return error_func(&commit->object, FSCK_ERROR, "parent objects missing");
}
- if (memcmp(buffer, "author ", 7))
+ if (starts_with(buffer, "author "))
return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'author' line");
buffer += 7;
err = fsck_ident(&buffer, &commit->object, error_func);
if (err)
return err;
- if (memcmp(buffer, "committer ", strlen("committer ")))
+ if (starts_with(buffer, "committer "))
return error_func(&commit->object, FSCK_ERROR, "invalid format - expected 'committer' line");
buffer += strlen("committer ");
err = fsck_ident(&buffer, &commit->object, error_func);
diff --git a/http-walker.c b/http-walker.c
index 1516c5e..9ffe05e 100644
--- a/http-walker.c
+++ b/http-walker.c
@@ -245,7 +245,7 @@ static void process_alternates_response(void *callback_data)
- base);
okay = 1;
}
- } else if (!memcmp(data + i, "../", 3)) {
+ } else if (!starts_with(data + i, "../")) {
/*
* Relative URL; chop the corresponding
* number of subpath from base (and ../
@@ -267,7 +267,7 @@ static void process_alternates_response(void *callback_data)
i += 3;
serverlen = strlen(base);
while (i + 2 < posn &&
- !memcmp(data + i, "../", 3)) {
+ !starts_with(data + i, "../")) {
do {
serverlen--;
} while (serverlen &&
diff --git a/imap-send.c b/imap-send.c
index 0bc6f7f..334b425 100644
--- a/imap-send.c
+++ b/imap-send.c
@@ -802,7 +802,7 @@ static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
resp = DRV_OK;
else {
if (!strcmp("NO", arg)) {
- if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */
+ if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !starts_with(cmd, "[TRYCREATE]"))) { /* SELECT, APPEND or UID COPY */
p = strchr(cmdp->cmd, '"');
if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", (int)(strchr(p + 1, '"') - p + 1), p)) {
resp = RESP_BAD;
diff --git a/pack-write.c b/pack-write.c
index 9b8308b..6f58024 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -289,7 +289,7 @@ char *index_pack_lockfile(int ip_out)
* later on. If we don't get that then tough luck with it.
*/
if (read_in_full(ip_out, packname, 46) == 46 && packname[45] == '\n' &&
- memcmp(packname, "keep\t", 5) == 0) {
+ starts_with(packname, "keep\t") == 0) {
char path[PATH_MAX];
packname[45] = 0;
snprintf(path, sizeof(path), "%s/pack/pack-%s.keep",
diff --git a/path.c b/path.c
index f9c5062..23f8437 100644
--- a/path.c
+++ b/path.c
@@ -26,7 +26,7 @@ static char *get_pathname(void)
static char *cleanup_path(char *path)
{
/* Clean it up */
- if (!memcmp(path, "./", 2)) {
+ if (!starts_with(path, "./")) {
path += 2;
while (*path == '/')
path++;
diff --git a/refs.c b/refs.c
index 89228e2..b5a14e3 100644
--- a/refs.c
+++ b/refs.c
@@ -63,7 +63,7 @@ static int check_refname_component(const char *refname, int flags)
if (refname[1] == '\0')
return -1; /* Component equals ".". */
}
- if (cp - refname >= 5 && !memcmp(cp - 5, ".lock", 5))
+ if (cp - refname >= 5 && !starts_with(cp - 5, ".lock"))
return -1; /* Refname ends with ".lock". */
return cp - refname;
}
diff --git a/remote.c b/remote.c
index e41251e..0b8986a 100644
--- a/remote.c
+++ b/remote.c
@@ -1144,7 +1144,7 @@ static int match_explicit(struct ref *src, struct ref *dst,
case 1:
break;
case 0:
- if (!memcmp(dst_value, "refs/", 5))
+ if (!starts_with(dst_value, "refs/"))
matched_dst = make_linked_ref(dst_value, dst_tail);
else if (is_null_sha1(matched_src->new_sha1))
error("unable to delete '%s': remote ref does not exist",
diff --git a/submodule.c b/submodule.c
index b80ecac..1edebc1 100644
--- a/submodule.c
+++ b/submodule.c
@@ -203,7 +203,7 @@ void gitmodules_config(void)
if (active_nr > pos) { /* there is a .gitmodules */
const struct cache_entry *ce = active_cache[pos];
if (ce_namelen(ce) == 11 &&
- !memcmp(ce->name, ".gitmodules", 11))
+ !starts_with(ce->name, ".gitmodules"))
gitmodules_is_unmerged = 1;
}
} else if (pos < active_nr) {
diff --git a/transport.c b/transport.c
index ca7bb44..c4b3ac9 100644
--- a/transport.c
+++ b/transport.c
@@ -1364,7 +1364,7 @@ static int refs_from_alternate_cb(struct alternate_object_database *e,
while (other[len-1] == '/')
other[--len] = '\0';
- if (len < 8 || memcmp(other + len - 8, "/objects", 8))
+ if (len < 8 || starts_with(other + len - 8, "/objects"))
return 0;
/* Is this a git repository with refs? */
memcpy(other + len - 8, "/refs", 6);
diff --git a/xdiff-interface.c b/xdiff-interface.c
index ecfa05f..4be401d 100644
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -53,7 +53,7 @@ int parse_hunk_header(char *line, int len,
}
else
*nn = 1;
- return -!!memcmp(cp, " @@", 3);
+ return -!!starts_with(cp, " @@");
}
static void consume_one(void *priv_, char *s, unsigned long size)
--
1.9.0
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