submodule foreach: document '$sm_path' instead of '$path'

As using a variable '$path' may be harmful to users due to
capitalization issues, see 64394e3ae9 (git-submodule.sh: Don't
use $path variable in eval_gettext string, 2012-04-17). Adjust
the documentation to advocate for using $sm_path,  which contains
the same value. We still make the 'path' variable available and
document it as a deprecated synonym of 'sm_path'.

Discussed-with: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Prathamesh Chavan <pc44800@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt
index 630999f41a902d8d2043e17f797666489792fd57..066c7b6c18e994859953451ec0273a7a444735c7 100644 (file)
--- a/Documentation/git-submodule.txt
+++ b/Documentation/git-submodule.txt
@@ -183,12 +183,15 @@ information too.
 
 foreach [--recursive] <command>::
        Evaluates an arbitrary shell command in each checked out submodule.
-       The command has access to the variables $name, $path, $sha1 and
+       The command has access to the variables $name, $sm_path, $sha1 and
        $toplevel:
        $name is the name of the relevant submodule section in `.gitmodules`,
-       $path is the name of the submodule directory relative to the
-       superproject, $sha1 is the commit as recorded in the superproject,
-       and $toplevel is the absolute path to the top-level of the superproject.
+       $sm_path is the path of the submodule as recorded in the immediate
+       superproject, $sha1 is the commit as recorded in the immediate
+       superproject, and $toplevel is the absolute path to the top-level
+       of the immediate superproject.
+       Note that to avoid conflicts with '$PATH' on Windows, the '$path'
+       variable is now a deprecated synonym of '$sm_path' variable.
        Any submodules defined in the superproject but not checked out are
        ignored by this command. Unless given `--quiet`, foreach prints the name
        of each submodule before evaluating the command.