merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 41 insertions, 13 deletions

diff --git a/third_party/git/Documentation/git-reset.txt b/third_party/git/Documentation/git-reset.txt
index 97e0544d9e1e..252e2d4e47d1 100644
--- a/third_party/git/Documentation/git-reset.txt
+++ b/third_party/git/Documentation/git-reset.txt
@@ -8,34 +8,36 @@ git-reset - Reset current HEAD to the specified state
 SYNOPSIS
 --------
 [verse]
-'git reset' [-q] [<tree-ish>] [--] <paths>...
-'git reset' (--patch | -p) [<tree-ish>] [--] [<paths>...]
+'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 and second form, copy entries from `<tree-ish>` to the index.
-In the third form, set the current branch head (`HEAD`) to `<commit>`,
+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>] [--] <paths>...::
-	This form resets the index entries for all `<paths>` to their
-	state at `<tree-ish>`.  (It does not affect the working tree or
-	the current branch.)
+'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 <paths>` is the opposite of `git add
-<paths>`. This command is equivalent to
-`git restore [--source=<tree-ish>] --staged <paths>...`.
+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 <paths>` to update the index entry, you can
+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>] [--] [<paths>...]::
+'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.
@@ -85,6 +87,12 @@ but carries forward unmerged index entries.
 	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
@@ -101,6 +109,26 @@ OPTIONS
 	`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
 --------