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, 34 insertions, 27 deletions

diff --git a/third_party/git/Documentation/git-rm.txt b/third_party/git/Documentation/git-rm.txt
index b5c46223c44b..ab750367fdef 100644
--- a/third_party/git/Documentation/git-rm.txt
+++ b/third_party/git/Documentation/git-rm.txt
@@ -8,16 +8,18 @@ git-rm - Remove files from the working tree and from the index
 SYNOPSIS
 --------
 [verse]
-'git rm' [-f | --force] [-n] [-r] [--cached] [--ignore-unmatch] [--quiet] [--] <file>...
+'git rm' [-f | --force] [-n] [-r] [--cached] [--ignore-unmatch]
+	  [--quiet] [--pathspec-from-file=<file> [--pathspec-file-nul]]
+	  [--] [<pathspec>...]
 
 DESCRIPTION
 -----------
-Remove files from the index, or from the working tree and the index.
-`git rm` will not remove a file from just your working directory.
-(There is no option to remove a file only from the working tree
-and yet keep it in the index; use `/bin/rm` if you want to do that.)
-The files being removed have to be identical to the tip of the branch,
-and no updates to their contents can be staged in the index,
+Remove files matching pathspec from the index, or from the working tree
+and the index. `git rm` will not remove a file from just your working
+directory. (There is no option to remove a file only from the working
+tree and yet keep it in the index; use `/bin/rm` if you want to do
+that.) The files being removed have to be identical to the tip of the
+branch, and no updates to their contents can be staged in the index,
 though that default behavior can be overridden with the `-f` option.
 When `--cached` is given, the staged content has to
 match either the tip of the branch or the file on disk,
@@ -26,15 +28,20 @@ allowing the file to be removed from just the index.
 
 OPTIONS
 -------
-<file>...::
-	Files to remove.  Fileglobs (e.g. `*.c`) can be given to
-	remove all matching files.  If you want Git to expand
-	file glob characters, you may need to shell-escape them.
-	A leading directory name
-	(e.g. `dir` to remove `dir/file1` and `dir/file2`) can be
-	given to remove all files in the directory, and recursively
-	all sub-directories,
-	but this requires the `-r` option to be explicitly given.
+<pathspec>...::
+	Files to remove.  A leading directory name (e.g. `dir` to remove
+	`dir/file1` and `dir/file2`) can be given to remove all files in
+	the directory, and recursively all sub-directories, but this
+	requires the `-r` option to be explicitly given.
++
+The command removes only the paths that are known to Git.
++
+File globbing matches across directory boundaries.  Thus, given two
+directories `d` and `d2`, there is a difference between using
+`git rm 'd*'` and `git rm 'd/*'`, as the former will also remove all
+of directory `d2`.
++
+For more details, see the 'pathspec' entry in linkgit:gitglossary[7].
 
 -f::
 --force::
@@ -68,19 +75,19 @@ OPTIONS
 	`git rm` normally outputs one line (in the form of an `rm` command)
 	for each file removed. This option suppresses that output.
 
+--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`.
 
-DISCUSSION
-----------
-
-The <file> list given to the command can be exact pathnames,
-file glob patterns, or leading directory names.  The command
-removes only the paths that are known to Git.  Giving the name of
-a file that you have not told Git about does not remove that file.
+--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).
 
-File globbing matches across directory boundaries.  Thus, given
-two directories `d` and `d2`, there is a difference between
-using `git rm 'd*'` and `git rm 'd/*'`, as the former will
-also remove all of directory `d2`.
 
 REMOVING FILES THAT HAVE DISAPPEARED FROM THE FILESYSTEM
 --------------------------------------------------------