add 'git credential' plumbing command

The credential API is in C, and not available to scripting languages.
Expose the functionalities of the API by wrapping them into a new
plumbing command "git credentials".

In other words, replace the internal "test-credential" by an official Git
command.

Most documentation writen by: Jeff King <peff@peff.net>
Signed-off-by: Pavel Volek <Pavel.Volek@ensimag.imag.fr>
Signed-off-by: Kim Thuat Nguyen <Kim-Thuat.Nguyen@ensimag.imag.fr>
Signed-off-by: Javier Roucher Iglesias <Javier.Roucher-Iglesias@ensimag.imag.fr>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 36 deletions

diff --git a/Documentation/technical/api-credentials.txt b/Documentation/technical/api-credentials.txt
index adb6f0c896..5977b58e57 100644
--- a/Documentation/technical/api-credentials.txt
+++ b/Documentation/technical/api-credentials.txt
@@ -241,42 +241,9 @@ appended to its command line, which is one of:
 	Remove a matching credential, if any, from the helper's storage.
 
 The details of the credential will be provided on the helper's stdin
-stream. The credential is split into a set of named attributes.
-Attributes are provided to the helper, one per line. Each attribute is
-specified by a key-value pair, separated by an `=` (equals) sign,
-followed by a newline. The key may contain any bytes except `=`,
-newline, or NUL. The value may contain any bytes except newline or NUL.
-In both cases, all bytes are treated as-is (i.e., there is no quoting,
-and one cannot transmit a value with newline or NUL in it). The list of
-attributes is terminated by a blank line or end-of-file.
-
-Git will send the following attributes (but may not send all of
-them for a given credential; for example, a `host` attribute makes no
-sense when dealing with a non-network protocol):
-
-`protocol`::
-
-	The protocol over which the credential will be used (e.g.,
-	`https`).
-
-`host`::
-
-	The remote hostname for a network credential.
-
-`path`::
-
-	The path with which the credential will be used. E.g., for
-	accessing a remote https repository, this will be the
-	repository's path on the server.
-
-`username`::
-
-	The credential's username, if we already have one (e.g., from a
-	URL, from the user, or from a previously run helper).
-
-`password`::
-
-	The credential's password, if we are asking it to be stored.
+stream. The exact format is the same as the input/output format of the
+`git credential` plumbing command (see the section `INPUT/OUTPUT
+FORMAT` in linkgit:git-credential[7] for a detailed specification).
 
 For a `get` operation, the helper should produce a list of attributes
 on stdout in the same format. A helper is free to produce a subset, or