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diff --git a/third_party/git/Documentation/git-reset.txt b/third_party/git/Documentation/git-reset.txt deleted file mode 100644 index 252e2d4e47d1..000000000000 --- a/third_party/git/Documentation/git-reset.txt +++ /dev/null @@ -1,503 +0,0 @@ -git-reset(1) -============ - -NAME ----- -git-reset - Reset current HEAD to the specified state - -SYNOPSIS --------- -[verse] -'git reset' [-q] [<tree-ish>] [--] <pathspec>... -'git reset' [-q] [--pathspec-from-file=<file> [--pathspec-file-nul]] [<tree-ish>] -'git reset' (--patch | -p) [<tree-ish>] [--] [<pathspec>...] -'git reset' [--soft | --mixed [-N] | --hard | --merge | --keep] [-q] [<commit>] - -DESCRIPTION ------------ -In the first three forms, copy entries from `<tree-ish>` to the index. -In the last form, set the current branch head (`HEAD`) to `<commit>`, -optionally modifying index and working tree to match. -The `<tree-ish>`/`<commit>` defaults to `HEAD` in all forms. - -'git reset' [-q] [<tree-ish>] [--] <pathspec>...:: -'git reset' [-q] [--pathspec-from-file=<file> [--pathspec-file-nul]] [<tree-ish>]:: - These forms reset the index entries for all paths that match the - `<pathspec>` to their state at `<tree-ish>`. (It does not affect - the working tree or the current branch.) -+ -This means that `git reset <pathspec>` is the opposite of `git add -<pathspec>`. This command is equivalent to -`git restore [--source=<tree-ish>] --staged <pathspec>...`. -+ -After running `git reset <pathspec>` to update the index entry, you can -use linkgit:git-restore[1] to check the contents out of the index to -the working tree. Alternatively, using linkgit:git-restore[1] -and specifying a commit with `--source`, you -can copy the contents of a path out of a commit to the index and to the -working tree in one go. - -'git reset' (--patch | -p) [<tree-ish>] [--] [<pathspec>...]:: - Interactively select hunks in the difference between the index - and `<tree-ish>` (defaults to `HEAD`). The chosen hunks are applied - in reverse to the index. -+ -This means that `git reset -p` is the opposite of `git add -p`, i.e. -you can use it to selectively reset hunks. See the ``Interactive Mode'' -section of linkgit:git-add[1] to learn how to operate the `--patch` mode. - -'git reset' [<mode>] [<commit>]:: - This form resets the current branch head to `<commit>` and - possibly updates the index (resetting it to the tree of `<commit>`) and - the working tree depending on `<mode>`. If `<mode>` is omitted, - defaults to `--mixed`. The `<mode>` must be one of the following: -+ --- ---soft:: - Does not touch the index file or the working tree at all (but - resets the head to `<commit>`, just like all modes do). This leaves - all your changed files "Changes to be committed", as `git status` - would put it. - ---mixed:: - Resets the index but not the working tree (i.e., the changed files - are preserved but not marked for commit) and reports what has not - been updated. This is the default action. -+ -If `-N` is specified, removed paths are marked as intent-to-add (see -linkgit:git-add[1]). - ---hard:: - Resets the index and working tree. Any changes to tracked files in the - working tree since `<commit>` are discarded. - ---merge:: - Resets the index and updates the files in the working tree that are - different between `<commit>` and `HEAD`, but keeps those which are - different between the index and working tree (i.e. which have changes - which have not been added). - If a file that is different between `<commit>` and the index has - unstaged changes, reset is aborted. -+ -In other words, `--merge` does something like a `git read-tree -u -m <commit>`, -but carries forward unmerged index entries. - ---keep:: - Resets index entries and updates files in the working tree that are - different between `<commit>` and `HEAD`. - If a file that is different between `<commit>` and `HEAD` has local - changes, reset is aborted. - ---[no-]recurse-submodules:: - When the working tree is updated, using --recurse-submodules will - also recursively reset the working tree of all active submodules - according to the commit recorded in the superproject, also setting - the submodules' HEAD to be detached at that commit. --- - -See "Reset, restore and revert" in linkgit:git[1] for the differences -between the three commands. - - -OPTIONS -------- - --q:: ---quiet:: ---no-quiet:: - Be quiet, only report errors. The default behavior is set by the - `reset.quiet` config option. `--quiet` and `--no-quiet` will - override the default behavior. - ---pathspec-from-file=<file>:: - Pathspec is passed in `<file>` instead of commandline args. If - `<file>` is exactly `-` then standard input is used. Pathspec - elements are separated by LF or CR/LF. Pathspec elements can be - quoted as explained for the configuration variable `core.quotePath` - (see linkgit:git-config[1]). See also `--pathspec-file-nul` and - global `--literal-pathspecs`. - ---pathspec-file-nul:: - Only meaningful with `--pathspec-from-file`. Pathspec elements are - separated with NUL character and all other characters are taken - literally (including newlines and quotes). - -\--:: - Do not interpret any more arguments as options. - -<pathspec>...:: - Limits the paths affected by the operation. -+ -For more details, see the 'pathspec' entry in linkgit:gitglossary[7]. - -EXAMPLES --------- - -Undo add:: -+ ------------- -$ edit <1> -$ git add frotz.c filfre.c -$ mailx <2> -$ git reset <3> -$ git pull git://info.example.com/ nitfol <4> ------------- -+ -<1> You are happily working on something, and find the changes - in these files are in good order. You do not want to see them - when you run `git diff`, because you plan to work on other files - and changes with these files are distracting. -<2> Somebody asks you to pull, and the changes sound worthy of merging. -<3> However, you already dirtied the index (i.e. your index does - not match the `HEAD` commit). But you know the pull you are going - to make does not affect `frotz.c` or `filfre.c`, so you revert the - index changes for these two files. Your changes in working tree - remain there. -<4> Then you can pull and merge, leaving `frotz.c` and `filfre.c` - changes still in the working tree. - -Undo a commit and redo:: -+ ------------- -$ git commit ... -$ git reset --soft HEAD^ <1> -$ edit <2> -$ git commit -a -c ORIG_HEAD <3> ------------- -+ -<1> This is most often done when you remembered what you - just committed is incomplete, or you misspelled your commit - message, or both. Leaves working tree as it was before "reset". -<2> Make corrections to working tree files. -<3> "reset" copies the old head to `.git/ORIG_HEAD`; redo the - commit by starting with its log message. If you do not need to - edit the message further, you can give `-C` option instead. -+ -See also the `--amend` option to linkgit:git-commit[1]. - -Undo a commit, making it a topic branch:: -+ ------------- -$ git branch topic/wip <1> -$ git reset --hard HEAD~3 <2> -$ git switch topic/wip <3> ------------- -+ -<1> You have made some commits, but realize they were premature - to be in the `master` branch. You want to continue polishing - them in a topic branch, so create `topic/wip` branch off of the - current `HEAD`. -<2> Rewind the master branch to get rid of those three commits. -<3> Switch to `topic/wip` branch and keep working. - -Undo commits permanently:: -+ ------------- -$ git commit ... -$ git reset --hard HEAD~3 <1> ------------- -+ -<1> The last three commits (`HEAD`, `HEAD^`, and `HEAD~2`) were bad - and you do not want to ever see them again. Do *not* do this if - you have already given these commits to somebody else. (See the - "RECOVERING FROM UPSTREAM REBASE" section in linkgit:git-rebase[1] - for the implications of doing so.) - -Undo a merge or pull:: -+ ------------- -$ git pull <1> -Auto-merging nitfol -CONFLICT (content): Merge conflict in nitfol -Automatic merge failed; fix conflicts and then commit the result. -$ git reset --hard <2> -$ git pull . topic/branch <3> -Updating from 41223... to 13134... -Fast-forward -$ git reset --hard ORIG_HEAD <4> ------------- -+ -<1> Try to update from the upstream resulted in a lot of - conflicts; you were not ready to spend a lot of time merging - right now, so you decide to do that later. -<2> "pull" has not made merge commit, so `git reset --hard` - which is a synonym for `git reset --hard HEAD` clears the mess - from the index file and the working tree. -<3> Merge a topic branch into the current branch, which resulted - in a fast-forward. -<4> But you decided that the topic branch is not ready for public - consumption yet. "pull" or "merge" always leaves the original - tip of the current branch in `ORIG_HEAD`, so resetting hard to it - brings your index file and the working tree back to that state, - and resets the tip of the branch to that commit. - -Undo a merge or pull inside a dirty working tree:: -+ ------------- -$ git pull <1> -Auto-merging nitfol -Merge made by recursive. - nitfol | 20 +++++---- - ... -$ git reset --merge ORIG_HEAD <2> ------------- -+ -<1> Even if you may have local modifications in your - working tree, you can safely say `git pull` when you know - that the change in the other branch does not overlap with - them. -<2> After inspecting the result of the merge, you may find - that the change in the other branch is unsatisfactory. Running - `git reset --hard ORIG_HEAD` will let you go back to where you - were, but it will discard your local changes, which you do not - want. `git reset --merge` keeps your local changes. - - -Interrupted workflow:: -+ -Suppose you are interrupted by an urgent fix request while you -are in the middle of a large change. The files in your -working tree are not in any shape to be committed yet, but you -need to get to the other branch for a quick bugfix. -+ ------------- -$ git switch feature ;# you were working in "feature" branch and -$ work work work ;# got interrupted -$ git commit -a -m "snapshot WIP" <1> -$ git switch master -$ fix fix fix -$ git commit ;# commit with real log -$ git switch feature -$ git reset --soft HEAD^ ;# go back to WIP state <2> -$ git reset <3> ------------- -+ -<1> This commit will get blown away so a throw-away log message is OK. -<2> This removes the 'WIP' commit from the commit history, and sets - your working tree to the state just before you made that snapshot. -<3> At this point the index file still has all the WIP changes you - committed as 'snapshot WIP'. This updates the index to show your - WIP files as uncommitted. -+ -See also linkgit:git-stash[1]. - -Reset a single file in the index:: -+ -Suppose you have added a file to your index, but later decide you do not -want to add it to your commit. You can remove the file from the index -while keeping your changes with git reset. -+ ------------- -$ git reset -- frotz.c <1> -$ git commit -m "Commit files in index" <2> -$ git add frotz.c <3> ------------- -+ -<1> This removes the file from the index while keeping it in the working - directory. -<2> This commits all other changes in the index. -<3> Adds the file to the index again. - -Keep changes in working tree while discarding some previous commits:: -+ -Suppose you are working on something and you commit it, and then you -continue working a bit more, but now you think that what you have in -your working tree should be in another branch that has nothing to do -with what you committed previously. You can start a new branch and -reset it while keeping the changes in your working tree. -+ ------------- -$ git tag start -$ git switch -c branch1 -$ edit -$ git commit ... <1> -$ edit -$ git switch -c branch2 <2> -$ git reset --keep start <3> ------------- -+ -<1> This commits your first edits in `branch1`. -<2> In the ideal world, you could have realized that the earlier - commit did not belong to the new topic when you created and switched - to `branch2` (i.e. `git switch -c branch2 start`), but nobody is - perfect. -<3> But you can use `reset --keep` to remove the unwanted commit after - you switched to `branch2`. - -Split a commit apart into a sequence of commits:: -+ -Suppose that you have created lots of logically separate changes and committed -them together. Then, later you decide that it might be better to have each -logical chunk associated with its own commit. You can use git reset to rewind -history without changing the contents of your local files, and then successively -use `git add -p` to interactively select which hunks to include into each commit, -using `git commit -c` to pre-populate the commit message. -+ ------------- -$ git reset -N HEAD^ <1> -$ git add -p <2> -$ git diff --cached <3> -$ git commit -c HEAD@{1} <4> -... <5> -$ git add ... <6> -$ git diff --cached <7> -$ git commit ... <8> ------------- -+ -<1> First, reset the history back one commit so that we remove the original - commit, but leave the working tree with all the changes. The -N ensures - that any new files added with `HEAD` are still marked so that `git add -p` - will find them. -<2> Next, we interactively select diff hunks to add using the `git add -p` - facility. This will ask you about each diff hunk in sequence and you can - use simple commands such as "yes, include this", "No don't include this" - or even the very powerful "edit" facility. -<3> Once satisfied with the hunks you want to include, you should verify what - has been prepared for the first commit by using `git diff --cached`. This - shows all the changes that have been moved into the index and are about - to be committed. -<4> Next, commit the changes stored in the index. The `-c` option specifies to - pre-populate the commit message from the original message that you started - with in the first commit. This is helpful to avoid retyping it. The - `HEAD@{1}` is a special notation for the commit that `HEAD` used to be at - prior to the original reset commit (1 change ago). - See linkgit:git-reflog[1] for more details. You may also use any other - valid commit reference. -<5> You can repeat steps 2-4 multiple times to break the original code into - any number of commits. -<6> Now you've split out many of the changes into their own commits, and might - no longer use the patch mode of `git add`, in order to select all remaining - uncommitted changes. -<7> Once again, check to verify that you've included what you want to. You may - also wish to verify that git diff doesn't show any remaining changes to be - committed later. -<8> And finally create the final commit. - - -DISCUSSION ----------- - -The tables below show what happens when running: - ----------- -git reset --option target ----------- - -to reset the `HEAD` to another commit (`target`) with the different -reset options depending on the state of the files. - -In these tables, `A`, `B`, `C` and `D` are some different states of a -file. For example, the first line of the first table means that if a -file is in state `A` in the working tree, in state `B` in the index, in -state `C` in `HEAD` and in state `D` in the target, then `git reset --soft -target` will leave the file in the working tree in state `A` and in the -index in state `B`. It resets (i.e. moves) the `HEAD` (i.e. the tip of -the current branch, if you are on one) to `target` (which has the file -in state `D`). - -.... -working index HEAD target working index HEAD ----------------------------------------------------- - A B C D --soft A B D - --mixed A D D - --hard D D D - --merge (disallowed) - --keep (disallowed) -.... - -.... -working index HEAD target working index HEAD ----------------------------------------------------- - A B C C --soft A B C - --mixed A C C - --hard C C C - --merge (disallowed) - --keep A C C -.... - -.... -working index HEAD target working index HEAD ----------------------------------------------------- - B B C D --soft B B D - --mixed B D D - --hard D D D - --merge D D D - --keep (disallowed) -.... - -.... -working index HEAD target working index HEAD ----------------------------------------------------- - B B C C --soft B B C - --mixed B C C - --hard C C C - --merge C C C - --keep B C C -.... - -.... -working index HEAD target working index HEAD ----------------------------------------------------- - B C C D --soft B C D - --mixed B D D - --hard D D D - --merge (disallowed) - --keep (disallowed) -.... - -.... -working index HEAD target working index HEAD ----------------------------------------------------- - B C C C --soft B C C - --mixed B C C - --hard C C C - --merge B C C - --keep B C C -.... - -`reset --merge` is meant to be used when resetting out of a conflicted -merge. Any mergy operation guarantees that the working tree file that is -involved in the merge does not have a local change with respect to the index -before it starts, and that it writes the result out to the working tree. So if -we see some difference between the index and the target and also -between the index and the working tree, then it means that we are not -resetting out from a state that a mergy operation left after failing -with a conflict. That is why we disallow `--merge` option in this case. - -`reset --keep` is meant to be used when removing some of the last -commits in the current branch while keeping changes in the working -tree. If there could be conflicts between the changes in the commit we -want to remove and the changes in the working tree we want to keep, -the reset is disallowed. That's why it is disallowed if there are both -changes between the working tree and `HEAD`, and between `HEAD` and the -target. To be safe, it is also disallowed when there are unmerged -entries. - -The following tables show what happens when there are unmerged -entries: - -.... -working index HEAD target working index HEAD ----------------------------------------------------- - X U A B --soft (disallowed) - --mixed X B B - --hard B B B - --merge B B B - --keep (disallowed) -.... - -.... -working index HEAD target working index HEAD ----------------------------------------------------- - X U A A --soft (disallowed) - --mixed X A A - --hard A A A - --merge A A A - --keep (disallowed) -.... - -`X` means any state and `U` means an unmerged index. - -GIT ---- -Part of the linkgit:git[1] suite |