From 2cc3167c688d1c91bc4cb9b1caa737b9d4971056 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Mon, 23 Apr 2007 00:21:02 -0700 Subject: [PATCH] Document "diff=driver" attribute Signed-off-by: Junio C Hamano --- Documentation/gitattributes.txt | 32 +++++++++++++++++++++++++++++--- 1 file changed, 29 insertions(+), 3 deletions(-) diff --git a/Documentation/gitattributes.txt b/Documentation/gitattributes.txt index 126871756..d2edb9b14 100644 --- a/Documentation/gitattributes.txt +++ b/Documentation/gitattributes.txt @@ -151,8 +151,34 @@ Unspecified:: text, it is treated as text. Otherwise it would generate `Binary files differ`. -Any other value set to `diff` attribute is ignored and git acts -as if the attribute is left unspecified. +String:: + + Diff is shown using the specified custom diff driver. + The driver program is given its input using the same + calling convention as used for GIT_EXTERNAL_DIFF + program. + + +Defining a custom diff driver +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +The definition of a diff driver is done in `gitconfig`, not +`gitattributes` file, so strictly speaking this manual page is a +wrong place to talk about it. However... + +To define a custom diff driver `jcdiff`, add a section to your +`$GIT_DIR/config` file (or `$HOME/.gitconfig` file) like this: + +---------------------------------------------------------------- +[diff "jcdiff"] + command = j-c-diff +---------------------------------------------------------------- + +When git needs to show you a diff for the path with `diff` +attribute set to `jcdiff`, it calls the command you specified +with the above configuration, i.e. `j-c-diff`, with 7 +parameters, just like `GIT_EXTERNAL_DIFF` program is called. +See gitlink:git[7] for details. Performing a three-way merge @@ -183,7 +209,7 @@ Unspecified:: different merge driver to be used for paths to which the `merge` attribute is unspecified. -Any other string value:: +String:: 3-way merge is performed using the specified custom merge driver. The built-in 3-way merge driver can be -- 2.26.2