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Diffstat (limited to 'Documentation/git-checkout.txt')
| -rw-r--r-- | Documentation/git-checkout.txt | 76 |
1 files changed, 69 insertions, 7 deletions
diff --git a/Documentation/git-checkout.txt b/Documentation/git-checkout.txt index 9442c66..df9a618 100644 --- a/Documentation/git-checkout.txt +++ b/Documentation/git-checkout.txt @@ -7,7 +7,7 @@ git-checkout - Checkout and switch to a branch. SYNOPSIS -------- -'git-checkout' [-f] [-b <new_branch>] [<branch>] [<paths>...] +'git-checkout' [-f] [-b <new_branch>] [-m] [<branch>] [<paths>...] DESCRIPTION ----------- @@ -34,6 +34,19 @@ OPTIONS -b:: Create a new branch and start it at <branch>. +-m:: + If you have local modifications to a file that is + different between the current branch and the branch you + are switching to, the command refuses to switch + branches, to preserve your modifications in context. + With this option, a three-way merge between the current + branch, your working tree contents, and the new branch + is done, and you will be on the new branch. ++ +When a merge conflict happens, the index entries for conflicting +paths are left unmerged, and you need to resolve the conflicts +and mark the resolved paths with `git update-index`. + <new_branch>:: Name for the new branch. @@ -42,13 +55,13 @@ OPTIONS commit. Defaults to HEAD. -EXAMPLE -------- +EXAMPLES +-------- -The following sequence checks out the `master` branch, reverts +. The following sequence checks out the `master` branch, reverts the `Makefile` to two revisions back, deletes hello.c by mistake, and gets it back from the index. - ++ ------------ $ git checkout master <1> $ git checkout master~2 Makefile <2> @@ -59,15 +72,64 @@ $ git checkout hello.c <3> <2> take out a file out of other commit <3> or "git checkout -- hello.c", as in the next example. ------------ - ++ If you have an unfortunate branch that is named `hello.c`, the last step above would be confused as an instruction to switch to that branch. You should instead write: - ++ ------------ $ git checkout -- hello.c ------------ +. After working in a wrong branch, switching to the correct +branch you would want to is done with: ++ +------------ +$ git checkout mytopic +------------ ++ +However, your "wrong" branch and correct "mytopic" branch may +differ in files that you have locally modified, in which case, +the above checkout would fail like this: ++ +------------ +$ git checkout mytopic +fatal: Entry 'frotz' not uptodate. Cannot merge. +------------ ++ +You can give the `-m` flag to the command, which would try a +three-way merge: ++ +------------ +$ git checkout -m mytopic +Auto-merging frotz +------------ ++ +After this three-way merge, the local modifications are _not_ +registered in your index file, so `git diff` would show you what +changes you made since the tip of the new branch. + +. When a merge conflict happens during switching branches with +the `-m` option, you would see something like this: ++ +------------ +$ git checkout -m mytopic +Auto-merging frotz +merge: warning: conflicts during merge +ERROR: Merge conflict in frotz +fatal: merge program failed +------------ ++ +At this point, `git diff` shows the changes cleanly merged as in +the previous example, as well as the changes in the conflicted +files. Edit and resolve the conflict and mark it resolved with +`git update-index` as usual: ++ +------------ +$ edit frotz +$ git update-index frotz +------------ + Author ------ |