[PATCH] submodule update: continue when an update fails

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Hi,
when running git submodule update the scripts stop after failing to
fetch an submodule. This is errornous because this implies that if a
submodule 'a' isn't availiable then submodule 'x' shouldn't be loaded.
This implies a relationship that isn't definied within git.

There's three different ways to solve this (because the script is runned
as a childprocess of the git-submodule.sh script):

1. use a global variable (via the export command) to share data between
 processes.
2. Print outdata from the childprocess to stdout and read it via a pipe
 in the parent process.
3. Do all error handling in the child process

I've choosen alternative 3 as it seams to have the smallest impact.


>From 7ba07dcfdd99c14522946e923ec63bd0bcd60021 Mon Sep 17 00:00:00 2001
From: Fredrik Gustafsson <iveqy@xxxxxxxxx>
Date: Mon, 18 Apr 2011 23:08:59 +0200
Subject: [PATCH] submodule update: continue when an update fails

git submodule update dies when a remote reference isn't a tree. Instead
of dying, print an error message and continue update the next submodule
(and die when all modules are done if there was any errors).

Signed-off-by: Fredrik Gustafsson <iveqy@xxxxxxxxx>
---
 git-submodule.sh |   30 +++++++++++++++++++++++-------
 1 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/git-submodule.sh b/git-submodule.sh
index b010a67..06ff7f2 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -441,7 +441,8 @@ cmd_update()
 	fi
 
 	cloned_modules=
-	module_list "$@" |
+	err=
+	module_list "$@" | {
 	while read mode sha1 stage path
 	do
 		if test "$stage" = U
@@ -521,17 +522,32 @@ cmd_update()
 				;;
 			esac
 
-			(clear_local_git_env; cd "$path" && $command "$sha1") ||
-			die "Unable to $action '$sha1' in submodule path '$path'"
-			say "Submodule path '$path': $msg '$sha1'"
+			if (clear_local_git_env; cd "$path" && $command "$sha1")
+			then
+				   say "Submodule path '$path': $msg '$sha1'"
+			else
+				   say "Unable to $action '$sha1' in submodule path '$path'"
+				   err="Failed to $action one or more submodule(s)"
+				   continue
+			fi
 		fi
 
 		if test -n "$recursive"
 		then
-			(clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags") ||
-			die "Failed to recurse into submodule path '$path'"
+			if !(clear_local_git_env; cd "$path" && eval cmd_update "$orig_flags")
+			then
+				say "Failed to recurse into submodule path '$path'"
+				continue
+			fi
 		fi
+
+	if test -n "$err"
+	then
+		die $err
+	fi
+
+	}
 }
 
 set_name_rev () {
-- 
1.7.5.rc0.133.gcc4dd.dirty

-- 
Med vänliga hälsningar
Fredrik Gustafsson

tel: 0733-608274
e-post: iveqy@xxxxxxxxx
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