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2015-03-23diff-lib.c: adjust position of i-t-a entries in diffLibravatar Nguyễn Thái Ngọc Duy1-4/+19
Entries added by "git add -N" are reminder for the user so that they don't forget to add them before committing. These entries appear in the index even though they are not real. Their presence in the index leads to a confusing "git status" like this: On branch master Changes to be committed: new file: foo Changes not staged for commit: modified: foo If you do a "git commit", "foo" will not be included even though "status" reports it as "to be committed". This patch changes the output to become On branch master Changes not staged for commit: new file: foo no changes added to commit The two hunks in diff-lib.c adjust "diff-index" and "diff-files" so that i-t-a entries appear as new files in diff-files and nothing in diff-index. Due to this change, diff-files may start to report "new files" for the first time. "add -u" needs to be told about this or it will die in denial, screaming "new files can't exist! Reality is wrong." Luckily, it's the only one among run_diff_files() callers that needs fixing. Now in the new world order, a hierarchy in the index that contain i-t-a paths is written out as a tree object as if these i-t-a entries do not exist, and comparing the index with such a tree object that would result from writing out the hierarchy will result in no difference. Update a test in t2203 that expected the i-t-a entries to appear as "added to the index" in the comparison to instead expect no output. An earlier change eec3e7e4 (cache-tree: invalidate i-t-a paths after generating trees, 2012-12-16) becomes an unnecessary pessimization in the new world order---a cache-tree in the index that corresponds to a hierarchy with i-t-a paths can now be marked as valid and record the object name of the tree that results from writing a tree object out of that hierarchy, as it will compare equal to that tree. Reverting the commit is left for the future, though, as it is purely a performance issue and no longer affects correctness. Helped-by: Michael J Gruber <git@drmicha.warpmail.net> Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-15cache-tree: invalidate i-t-a paths after generating treesLibravatar Nguyễn Thái Ngọc Duy1-0/+20
Intent-to-add entries used to forbid writing trees so it was not a problem. After commit 3f6d56d (commit: ignore intent-to-add entries instead of refusing - 2012-02-07), we can generate trees from an index with i-t-a entries. However, the commit forgets to invalidate all paths leading to i-t-a entries. With fully valid cache-tree (e.g. after commit or write-tree), diff operations may prefer cache-tree to index and not see i-t-a entries in the index, because cache-tree does not have them. Reported-by: Jonathon Mah <me@JonathonMah.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-07commit: ignore intent-to-add entries instead of refusingLibravatar Junio C Hamano1-3/+5
Originally, "git add -N" was introduced to help users from forgetting to add new files to the index before they ran "git commit -a". As an attempt to help them further so that they do not forget to say "-a", "git commit" to commit the index as-is was taught to error out, reminding the user that they may have forgotten to add the final contents of the paths before running the command. This turned out to be a false "safety" that is useless. If the user made changes to already tracked paths and paths added with "git add -N", and then ran "git add" to register the final contents of the paths added with "git add -N", "git commit" will happily create a commit out of the index, without including the local changes made to the already tracked paths. It was not a useful "safety" measure to prevent "forgetful" mistakes from happening. It turns out that this behaviour is not just a useless false "safety", but actively hurts use cases of "git add -N" that were discovered later and have become popular, namely, to tell Git to be aware of these paths added by "git add -N", so that commands like "git status" and "git diff" would include them in their output, even though the user is not interested in including them in the next commit they are going to make. Fix this ancient UI mistake, and instead make a commit from the index ignoring the paths added by "git add -N" without adding real contents. Based on the work by Nguyễn Thái Ngọc Duy, and helped by injection of sanity from Jonathan Nieder and others on the Git mailing list. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-11t2203: fix wrong commit commandLibravatar Nguyễn Thái Ngọc Duy1-1/+1
Add commit message to avoid commit's aborting due to the lack of commit message, not because there are INTENT_TO_ADD entries in index. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-30git add --intent-to-add: do not let an empty blob be committed by accidentLibravatar Junio C Hamano1-0/+28
Writing a tree out of an index with an "intent to add" entry is blocked. This implies that you cannot "git commit" from such a state; however you can still do "git commit -a" or "git commit $that_path". Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-31git-add --intent-to-add (-N)Libravatar Junio C Hamano1-0/+36
This adds "--intent-to-add" option to "git add". This is to let the system know that you will tell it the final contents to be staged later, iow, just be aware of the presense of the path with the type of the blob for now. It is implemented by staging an empty blob as the content. With this sequence: $ git reset --hard $ edit newfile $ git add -N newfile $ edit newfile oldfile $ git diff the diff will show all changes relative to the current commit. Then you can do: $ git commit -a ;# commit everything or $ git commit oldfile ;# only oldfile, newfile not yet added to pretend you are working with an index-free system like CVS. Signed-off-by: Junio C Hamano <gitster@pobox.com>