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Diffstat (limited to 'Documentation/git-bisect.txt')
| -rw-r--r-- | Documentation/git-bisect.txt | 51 |
1 files changed, 41 insertions, 10 deletions
diff --git a/Documentation/git-bisect.txt b/Documentation/git-bisect.txt index e5862b9dbb..c39d957c3a 100644 --- a/Documentation/git-bisect.txt +++ b/Documentation/git-bisect.txt @@ -20,7 +20,7 @@ on the subcommand: git bisect bad [<rev>] git bisect good [<rev>...] git bisect skip [(<rev>|<range>)...] - git bisect reset [<branch>] + git bisect reset [<commit>] git bisect visualize git bisect replay <logfile> git bisect log @@ -81,16 +81,27 @@ will have been left with the first bad kernel revision in "refs/bisect/bad". Bisect reset ~~~~~~~~~~~~ -To return to the original head after a bisect session, issue the -following command: +After a bisect session, to clean up the bisection state and return to +the original HEAD, issue the following command: ------------------------------------------------ $ git bisect reset ------------------------------------------------ -This resets the tree to the original branch instead of being on the -bisection commit ("git bisect start" will also do that, as it resets -the bisection state). +By default, this will return your tree to the commit that was checked +out before `git bisect start`. (A new `git bisect start` will also do +that, as it cleans up the old bisection state.) + +With an optional argument, you can return to a different commit +instead: + +------------------------------------------------ +$ git bisect reset <commit> +------------------------------------------------ + +For example, `git bisect reset HEAD` will leave you on the current +bisection commit and avoid switching commits at all, while `git bisect +reset bisect/bad` will check out the first bad revision. Bisect visualize ~~~~~~~~~~~~~~~~ @@ -164,9 +175,8 @@ to do it for you by issuing the command: $ git bisect skip # Current version cannot be tested ------------ -But computing the commit to test may be slower afterwards and git may -eventually not be able to tell the first bad commit among a bad commit -and one or more skipped commits. +But git may eventually be unable to tell the first bad commit among +a bad commit and one or more skipped commits. You can even skip a range of commits, instead of just one commit, using the "'<commit1>'..'<commit2>'" notation. For example: @@ -217,7 +227,7 @@ If you have a script that can tell if the current source code is good or bad, you can bisect by issuing the command: ------------ -$ git bisect run my_script +$ git bisect run my_script arguments ------------ Note that the script (`my_script` in the above example) should @@ -257,6 +267,13 @@ $ git bisect start HEAD v1.2 -- # HEAD is bad, v1.2 is good $ git bisect run make # "make" builds the app ------------ +* Automatically bisect a test failure between origin and HEAD: ++ +------------ +$ git bisect start HEAD origin -- # HEAD is bad, origin is good +$ git bisect run make test # "make test" builds and tests +------------ + * Automatically bisect a broken test suite: + ------------ @@ -296,6 +313,15 @@ It is safer if both "test.sh" and "check_test_case.sh" scripts are outside the repository to prevent interactions between the bisect, make and test processes and the scripts. +* Automatically bisect a broken test suite: ++ +------------ +$ git bisect start HEAD HEAD~10 -- # culprit is among the last 10 +$ git bisect run sh -c "make || exit 125; ~/check_test_case.sh" +------------ ++ +Does the same as the previous example, but on a single line. + Author ------ Written by Linus Torvalds <torvalds@osdl.org> @@ -304,6 +330,11 @@ Documentation ------------- Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>. +SEE ALSO +-------- +link:git-bisect-lk2009.html[Fighting regressions with git bisect], +linkgit:git-blame[1]. + GIT --- Part of the linkgit:git[1] suite |