diff options
| -rw-r--r-- | Documentation/git-check-ref-format.txt | 2 | ||||
| -rw-r--r-- | Documentation/revisions.txt | 3 | ||||
| -rw-r--r-- | refs.c | 4 | ||||
| -rw-r--r-- | sha1_name.c | 28 | ||||
| -rwxr-xr-x | t/t1508-at-combinations.sh | 8 |
5 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/git-check-ref-format.txt b/Documentation/git-check-ref-format.txt index a49be1bab4..fc02959ba4 100644 --- a/Documentation/git-check-ref-format.txt +++ b/Documentation/git-check-ref-format.txt @@ -54,6 +54,8 @@ Git imposes the following rules on how references are named: . They cannot contain a sequence `@{`. +. They cannot be the single character `@`. + . They cannot contain a `\`. These rules make it easy for shell script based tools to parse diff --git a/Documentation/revisions.txt b/Documentation/revisions.txt index d477b3f6bc..09896a37b1 100644 --- a/Documentation/revisions.txt +++ b/Documentation/revisions.txt @@ -58,6 +58,9 @@ the '$GIT_DIR/refs' directory or from the '$GIT_DIR/packed-refs' file. While the ref name encoding is unspecified, UTF-8 is preferred as some output processing may assume ref names in UTF-8. +'@':: + '@' alone is a shortcut for 'HEAD'. + '<refname>@\{<date>\}', e.g. 'master@\{yesterday\}', 'HEAD@\{5 minutes ago\}':: A ref followed by the suffix '@' with a date specification enclosed in a brace @@ -72,6 +72,10 @@ int check_refname_format(const char *refname, int flags) { int component_len, component_count = 0; + if (!strcmp(refname, "@")) + /* Refname is a single character '@'. */ + return -1; + while (1) { /* We are at the start of a path component. */ component_len = check_refname_component(refname, flags); diff --git a/sha1_name.c b/sha1_name.c index 93197b91e3..a0b59235a9 100644 --- a/sha1_name.c +++ b/sha1_name.c @@ -1004,6 +1004,28 @@ int get_sha1_mb(const char *name, unsigned char *sha1) return st; } +/* parse @something syntax, when 'something' is not {.*} */ +static int interpret_empty_at(const char *name, int namelen, int len, struct strbuf *buf) +{ + const char *next; + + if (len || name[1] == '{') + return -1; + + /* make sure it's a single @, or @@{.*}, not @foo */ + next = strchr(name + len + 1, '@'); + if (next && next[1] != '{') + return -1; + if (!next) + next = name + namelen; + if (next != name + 1) + return -1; + + strbuf_reset(buf); + strbuf_add(buf, "HEAD", 4); + return 1; +} + static int reinterpret(const char *name, int namelen, int len, struct strbuf *buf) { /* we have extra data, which might need further processing */ @@ -1068,9 +1090,15 @@ int interpret_branch_name(const char *name, int namelen, struct strbuf *buf) cp = strchr(name, '@'); if (!cp) return -1; + + len = interpret_empty_at(name, namelen, cp - name, buf); + if (len > 0) + return reinterpret(name, namelen, len, buf); + tmp_len = upstream_mark(cp, namelen - (cp - name)); if (!tmp_len) return -1; + len = cp + tmp_len - name; cp = xstrndup(name, cp - name); upstream = branch_get(*cp ? cp : NULL); diff --git a/t/t1508-at-combinations.sh b/t/t1508-at-combinations.sh index e5aea3b896..ceb844985f 100755 --- a/t/t1508-at-combinations.sh +++ b/t/t1508-at-combinations.sh @@ -32,6 +32,9 @@ test_expect_success 'setup' ' git checkout -b upstream-branch && test_commit upstream-one && test_commit upstream-two && + git checkout -b @/at-test && + git checkout -b @@/at-test && + git checkout -b @at-test && git checkout -b old-branch && test_commit old-one && test_commit old-two && @@ -55,6 +58,11 @@ check "HEAD@{u}" ref refs/heads/upstream-branch check "@{u}@{1}" commit upstream-one check "@{-1}@{u}" ref refs/heads/master check "@{-1}@{u}@{1}" commit master-one +check "@" commit new-two +check "@@{u}" ref refs/heads/upstream-branch +check "@@/at-test" ref refs/heads/@@/at-test +check "@/at-test" ref refs/heads/@/at-test +check "@at-test" ref refs/heads/@at-test nonsense "@{u}@{-1}" nonsense "@{0}@{0}" nonsense "@{1}@{u}" |