Describe git checkout

[git-wiki.git] / pep-git.txt

diff --git a/pep-git.txt b/pep-git.txt
index 6a298b9f7ee3257d889ea09c81e7d0411e34d271..4cbedf62b90518b76f02adb2565cde2c7395e5df 100644 (file)
--- a/pep-git.txt
+++ b/pep-git.txt
@@ -118,10 +118,15 @@ done something like that::
     $ cd python
     $ git branch v1 origin/v1
 
+The first command clones remote repository into local directory
+`python``, creates a new local branch v2, sets remotes/origin/v2 as
+its upstream remote branch and checks it out into the working
+directory.
+
 The last command creates a new local branch v1 and sets
 remotes/origin/v1 as its upstream remote branch.
 
-The same result can achieved with commands::
+The same result can be achieved with commands::
 
     $ git clone -b v1 http://git.python.org/python.git
     $ cd python
@@ -376,11 +381,24 @@ or shared repository.
 Undo
 ====
 
-TODO: describe undo strategies: git reset, git revert, git checkout,
+Whatever you do, don't panic. Almost anything in git can be undone.
+``git checkout``, for example, can be used to restore the content of
+file(s) to that one of a commit. Like this::
+
+    git checkout HEAD~ README
+
+The commands restores the contente of README file to the last but one
+commit in the current branch. By default a commit ID is simple HEAD;
+i.e. ``git checkout README`` restores README to the latest commit.
+
+(Do not use ``git checkout`` to view a content of a file in a commit,
+use ``git cat-file -p``; e.g. ``git cat-file -p HEAD~:path/to/README``).
+
+TODO: describe undo strategies: git reset, git revert,
 git reflog. "Commit early, commit often".
 
 How to undo a merge
-https://kernel.org/pub/software/scm/git/docs/howto/revert-a-faulty-merge.html
+https://www.kernel.org/pub/software/scm/git/docs/howto/revert-a-faulty-merge.html
 
 
 Merge or rebase?
@@ -408,6 +426,7 @@ and configure rebase for existing branches::
 
 For example::
 
+    $ git config branch.v1.rebase true
     $ git config branch.v2.rebase true
 
 After that ``git pull origin v2`` becomes equivalent to ``git pull
@@ -416,12 +435,12 @@ After that ``git pull origin v2`` becomes equivalent to ``git pull
 In case when merge is preferred it is recommended to create new
 commits in a separate feature or topic branch while using rebase to
 update the mainline branch. When the topic branch is ready merge it
-into mainline. To avoid a tedious task of resolving conflicts you can
-merge the topic branch to the mainline from time to time and switch
-back to the topic branch to continue working on it. The entire
-workflow would be something like::
+into mainline. To avoid a tedious task of resolving large number of
+conflicts at once you can merge the topic branch to the mainline from
+time to time and switch back to the topic branch to continue working
+on it. The entire workflow would be something like::
 
-    $ git checkout -b issue-42  # create and switch to a new branch
+    $ git checkout -b issue-42  # create a new issue branch and switch to it
         ...edit/test/commit...
     $ git checkout v2
     $ git pull --rebase origin v2  # update v2 from the upstream
@@ -432,9 +451,9 @@ workflow would be something like::
 When the topic branch is deleted only the label is removed, commits
 are stayed in the database, they are now merged into v2::
 
-    o--o--o--o--o--M--< v2 - it is the mainline branch
+    o--o--o--o--o--M--< v2 - the mainline branch
         \         /
-         --*--*--*         - it is the topic branch, now unnamed
+         --*--*--*         - the topic branch, now unnamed
 
 The topic branch is deleted to avoid cluttering branch namespace with
 small topic branches. Information on what issue was fixed or what
@@ -485,6 +504,7 @@ Database maintenance
 ====================
 
 TODO: dangling objects, git gc, git repack.
+https://gcc.gnu.org/ml/gcc/2007-12/msg00165.html
 
 
 Tips and tricks
@@ -492,7 +512,10 @@ Tips and tricks
 
 TODO: sticky options; example: git grep -O.
 
+TODO: tricky options; example: git log -p3.
+
 TODO: bash/zsh completion, bash/zsh prompt.
+https://git.kernel.org/cgit/git/git.git/tree/contrib/completion
 
 
 git on server
@@ -500,6 +523,11 @@ git on server
 
 TODO: anonymous access; git over ssh; gitolite; gitweb; cgit; gitlab.
 
+http://gitolite.com/gitolite/index.html
+
+https://git.kernel.org/cgit/git/git.git/tree/gitweb
+
+http://git.zx2c4.com/cgit/
 
 From Mercurial to git
 =====================