[PATCH v2] Documentation: Document diff.<tool>.* and filter.<driver>.* in config

[Ramkumar Ramachandra <artagnon@gmail.com>]

Although the gitattributes page contains comprehensive information
about these configuration options, they should be included in the
config documentation for completeness.

Helped-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
---
The first iteration of this patch contained completely wrong
descriptions for diff.<tool>.* options. Thanks to Jakub for pointing
them out, and for pointing out that I left out a a few options
undocumented (found in userdiff.c).

 Documentation/config.txt |   46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 46 insertions(+), 0 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 8ea55d4..b2ec4e1 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -875,6 +875,42 @@ diff.tool::
 	the same valid values as `merge.tool` minus "tortoisemerge"
 	and plus "kompare".
 
+diff.<tool>.command::
+	Defines command to be called to generate diff for files with
+	`diff=<tool>` gitattribute.  See linkgit:gitattributes[5] for
+	details.
+
+diff.<tool>.funcname::
+	Specifies a regular expression that matches a line to use as
+	the hunk header for files with `diff=<tool>` gitattribute. A
+	built-in pattern may also be used.  See
+	linkgit:gitattributes[5] for details.
+
+diff.<tool>.xfuncname::
+	Same as 'diff.<tool>.funcname', except that an extended
+	regular expression can be specified in this case.
+
+diff.<tool>.binary::
+	Set to true to treat files files with `diff=<tool>`
+	gitattribute as binary for the purposes of diff.  See
+	linkgit:gitattributes[5] for details.
+
+diff.<tool>.textconv::
+	Defines command to be called to generate text-converted version
+	of a binary file with `diff=<tool>` gitattribute.  The result of
+	the conversion is used to generate human-readable diff.  See
+	linkgit:gitattributes[5] for details.
+
+diff.<tool>.wordregex::
+	Specifies the regular expression to use to customize the rules
+	that `git diff --word-diff` uses to split words in a line.
+	See linkgit:gitattributes[5] for details.
+
+diff.<tool>.cachetextconv::
+	Set to true to enable caching of text conversion outputs for
+	files with `diff=<tool>` gitattribute.  See
+	linkgit:gitattributes[5] for details.
+
 difftool.<tool>.path::
 	Override the path for the given tool.  This is useful in case
 	your tool is not in the PATH.
@@ -973,6 +1009,16 @@ format.signoff::
     the rights to submit this work under the same open source license.
     Please see the 'SubmittingPatches' document for further discussion.
 
+filter.<driver>.clean::
+	Defines the command to be used to convert the contents of
+	worktree file upon checkin.  See linkgit:gitattributes[5] for
+	details.
+
+filter.<driver>.smudge::
+	Defines the command to be used to convert the blob object to
+	worktree file upon checkout.  See linkgit:gitattributes[5] for
+	details.
+
 gc.aggressiveWindow::
 	The window size parameter used in the delta compression
 	algorithm used by 'git gc --aggressive'.  This defaults
-- 
1.7.4.rc1.7.g2cf08.dirty