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author | Junio C Hamano <gitster@pobox.com> | 2014-06-03 23:06:40 +0400 |
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committer | Junio C Hamano <gitster@pobox.com> | 2014-06-03 23:06:41 +0400 |
commit | 2cc70cefdd4a249fab895943890d21071e03f8c7 (patch) | |
tree | 011f926458c12d9298bebefdbc732a82a7522846 /Documentation | |
parent | 8eaf517835d0534767d6a54d12d072ce30276ad9 (diff) | |
parent | 6a402338ec9ca0369e1801533dda2108689ceaaf (diff) |
Merge branch 'mh/ref-transaction'
Update "update-ref --stdin [-z]" and then introduce a transactional
support for (multi-)reference updates.
* mh/ref-transaction: (27 commits)
ref_transaction_commit(): work with transaction->updates in place
struct ref_update: add a type field
struct ref_update: add a lock field
ref_transaction_commit(): simplify code using temporary variables
struct ref_update: store refname as a FLEX_ARRAY
struct ref_update: rename field "ref_name" to "refname"
refs: remove API function update_refs()
update-ref --stdin: reimplement using reference transactions
refs: add a concept of a reference transaction
update-ref --stdin: harmonize error messages
update-ref --stdin: improve the error message for unexpected EOF
t1400: test one mistake at a time
update-ref --stdin -z: deprecate interpreting the empty string as zeros
update-ref.c: extract a new function, parse_next_sha1()
t1400: test that stdin -z update treats empty <newvalue> as zeros
update-ref --stdin: simplify error messages for missing oldvalues
update-ref --stdin: make error messages more consistent
update-ref --stdin: improve error messages for invalid values
update-ref.c: extract a new function, parse_refname()
parse_cmd_verify(): copy old_sha1 instead of evaluating <oldvalue> twice
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/git-update-ref.txt | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/Documentation/git-update-ref.txt b/Documentation/git-update-ref.txt index 0a0a5512b3..c8f5ae5cb3 100644 --- a/Documentation/git-update-ref.txt +++ b/Documentation/git-update-ref.txt @@ -68,7 +68,12 @@ performs all modifications together. Specify commands of the form: option SP <opt> LF Quote fields containing whitespace as if they were strings in C source -code. Alternatively, use `-z` to specify commands without quoting: +code; i.e., surrounded by double-quotes and with backslash escapes. +Use 40 "0" characters or the empty string to specify a zero value. To +specify a missing value, omit the value and its preceding SP entirely. + +Alternatively, use `-z` to specify in NUL-terminated format, without +quoting: update SP <ref> NUL <newvalue> NUL [<oldvalue>] NUL create SP <ref> NUL <newvalue> NUL @@ -76,8 +81,12 @@ code. Alternatively, use `-z` to specify commands without quoting: verify SP <ref> NUL [<oldvalue>] NUL option SP <opt> NUL -Lines of any other format or a repeated <ref> produce an error. -Command meanings are: +In this format, use 40 "0" to specify a zero value, and use the empty +string to specify a missing value. + +In either format, values can be specified in any form that Git +recognizes as an object name. Commands in any other format or a +repeated <ref> produce an error. Command meanings are: update:: Set <ref> to <newvalue> after verifying <oldvalue>, if given. @@ -102,9 +111,6 @@ option:: The only valid option is `no-deref` to avoid dereferencing a symbolic ref. -Use 40 "0" or the empty string to specify a zero value, except that -with `-z` an empty <oldvalue> is considered missing. - If all <ref>s can be locked with matching <oldvalue>s simultaneously, all modifications are performed. Otherwise, no modifications are performed. Note that while each individual |