git-notes(1): add a section about the meaning of history

diff --git a/Documentation/git-remote-helpers.txt b/Documentation/git-remote-helpers.txt
index 5cfdc0cfc553dc01f6f1c7cb185e79449ee0b0a8..4685a898f153091d2b747bfb204cf0686c6a8f82 100644 (file)
--- a/Documentation/git-remote-helpers.txt
+++ b/Documentation/git-remote-helpers.txt
@@ -25,7 +25,10 @@ Commands are given by the caller on the helper's standard input, one per line.
 
 'capabilities'::
        Lists the capabilities of the helper, one per line, ending
-       with a blank line.
+       with a blank line. Each capability may be preceeded with '*'.
+       This marks them mandatory for git version using the remote
+       helper to understand (unknown mandatory capability is fatal
+       error).
 
 'list'::
        Lists the refs, one per line, in the format "<value> <name>
@@ -90,6 +93,20 @@ Supported if the helper has the "push" capability.
 +
 Supported if the helper has the "import" capability.
 
+'connect' <service>::
+       Connects to given service. Standard input and standard output
+       of helper are connected to specified service (git prefix is
+       included in service name so e.g. fetching uses 'git-upload-pack'
+       as service) on remote side. Valid replies to this command are
+       empty line (connection established), 'fallback' (no smart
+       transport support, fall back to dumb transports) and just
+       exiting with error message printed (can't connect, don't
+       bother trying to fall back). After line feed terminating the
+       positive (empty) response, the output of service starts. After
+       the connection ends, the remote helper exits.
++
+Supported if the helper has the "connect" capability.
+
 If a fatal error occurs, the program writes the error message to
 stderr and exits. The caller should expect that a suitable error
 message has been printed if the child closes the connection without
@@ -123,6 +140,9 @@ CAPABILITIES
        all, it must cover all refs reported by the list command; if
        it is not used, it is effectively "*:*"
 
+'connect'::
+       This helper supports the 'connect' command.
+
 REF LIST ATTRIBUTES
 -------------------
 
@@ -165,9 +185,15 @@ OPTIONS
        but don't actually change any repository data.  For most
        helpers this only applies to the 'push', if supported.
 
+'option servpath <c-style-quoted-path>'::
+       Set service path (--upload-pack, --receive-pack etc.) for
+       next connect. Remote helper MAY support this option. Remote
+       helper MUST NOT rely on this option being set before
+       connect request occurs.
+
 Documentation
 -------------
-Documentation by Daniel Barkalow.
+Documentation by Daniel Barkalow and Ilari Liusvaara
 
 GIT
 ---