diff options
Diffstat (limited to 'Documentation/git-update-index.txt')
| -rw-r--r-- | Documentation/git-update-index.txt | 81 |
1 files changed, 64 insertions, 17 deletions
diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt index f4e5a85351..7386c93162 100644 --- a/Documentation/git-update-index.txt +++ b/Documentation/git-update-index.txt @@ -18,7 +18,7 @@ SYNOPSIS [--[no-]skip-worktree] [--ignore-submodules] [--[no-]split-index] - [--[no-|force-]untracked-cache] + [--[no-|test-|force-]untracked-cache] [--really-refresh] [--unresolve] [--again | -g] [--info-only] [--index-info] [-z] [--stdin] [--index-version <n>] @@ -102,7 +102,7 @@ thus, in case the assumed-untracked file is changed upstream, you will need to handle the situation manually. --really-refresh:: - Like '--refresh', but checks stat information unconditionally, + Like `--refresh`, but checks stat information unconditionally, without regard to the "assume unchanged" setting. --[no-]skip-worktree:: @@ -174,17 +174,30 @@ may not support it yet. --untracked-cache:: --no-untracked-cache:: - Enable or disable untracked cache extension. This could speed - up for commands that involve determining untracked files such - as `git status`. The underlying operating system and file - system must change `st_mtime` field of a directory if files - are added or deleted in that directory. + Enable or disable untracked cache feature. Please use + `--test-untracked-cache` before enabling it. ++ +These options take effect whatever the value of the `core.untrackedCache` +configuration variable (see linkgit:git-config[1]). But a warning is +emitted when the change goes against the configured value, as the +configured value will take effect next time the index is read and this +will remove the intended effect of the option. + +--test-untracked-cache:: + Only perform tests on the working directory to make sure + untracked cache can be used. You have to manually enable + untracked cache using `--untracked-cache` or + `--force-untracked-cache` or the `core.untrackedCache` + configuration variable afterwards if you really want to use + it. If a test fails the exit code is 1 and a message + explains what is not working as needed, otherwise the exit + code is 0 and OK is printed. --force-untracked-cache:: - For safety, `--untracked-cache` performs tests on the working - directory to make sure untracked cache can be used. These - tests can take a few seconds. `--force-untracked-cache` can be - used to skip the tests. + Same as `--untracked-cache`. Provided for backwards + compatibility with older versions of Git where + `--untracked-cache` used to imply `--test-untracked-cache` but + this option would enable the extension unconditionally. \--:: Do not interpret any more arguments as options. @@ -198,7 +211,7 @@ may not support it yet. Using --refresh --------------- -'--refresh' does not calculate a new sha1 file or bring the index +`--refresh` does not calculate a new sha1 file or bring the index up-to-date for mode/content changes. But what it *does* do is to "re-match" the stat information of a file with the index, so that you can refresh the index for a file that hasn't been changed but where @@ -209,7 +222,7 @@ up the stat index details with the proper files. Using --cacheinfo or --info-only -------------------------------- -'--cacheinfo' is used to register a file that is not in the +`--cacheinfo` is used to register a file that is not in the current working directory. This is useful for minimum-checkout merging. @@ -219,12 +232,12 @@ To pretend you have a file with mode and sha1 at path, say: $ git update-index --cacheinfo <mode>,<sha1>,<path> ---------------- -'--info-only' is used to register files without placing them in the object +`--info-only` is used to register files without placing them in the object database. This is useful for status-only repositories. -Both '--cacheinfo' and '--info-only' behave similarly: the index is updated -but the object database isn't. '--cacheinfo' is useful when the object is -in the database but the file isn't available locally. '--info-only' is +Both `--cacheinfo` and `--info-only` behave similarly: the index is updated +but the object database isn't. `--cacheinfo` is useful when the object is +in the database but the file isn't available locally. `--info-only` is useful when the file is available, but you do not wish to update the object database. @@ -375,6 +388,37 @@ Although this bit looks similar to assume-unchanged bit, its goal is different from assume-unchanged bit's. Skip-worktree also takes precedence over assume-unchanged bit when both are set. +Untracked cache +--------------- + +This cache is meant to speed up commands that involve determining +untracked files such as `git status`. + +This feature works by recording the mtime of the working tree +directories and then omitting reading directories and stat calls +against files in those directories whose mtime hasn't changed. For +this to work the underlying operating system and file system must +change the `st_mtime` field of directories if files in the directory +are added, modified or deleted. + +You can test whether the filesystem supports that with the +`--test-untracked-cache` option. The `--untracked-cache` option used +to implicitly perform that test in older versions of Git, but that's +no longer the case. + +If you want to enable (or disable) this feature, it is easier to use +the `core.untrackedCache` configuration variable (see +linkgit:git-config[1]) than using the `--untracked-cache` option to +`git update-index` in each repository, especially if you want to do so +across all repositories you use, because you can set the configuration +variable to `true` (or `false`) in your `$HOME/.gitconfig` just once +and have it affect all repositories you touch. + +When the `core.untrackedCache` configuration variable is changed, the +untracked cache is added to or removed from the index the next time a +command reads the index; while when `--[no-|force-]untracked-cache` +are used, the untracked cache is immediately added to or removed from +the index. Configuration ------------- @@ -400,6 +444,9 @@ It can be useful when the inode change time is regularly modified by something outside Git (file system crawlers and backup systems use ctime for marking files processed) (see linkgit:git-config[1]). +The untracked cache extension can be enabled by the +`core.untrackedCache` configuration variable (see +linkgit:git-config[1]). SEE ALSO -------- |