From 58eccfa3f1f94f5b288a561bdb5fd482471737c0 Mon Sep 17 00:00:00 2001
From: Petr Baudis <pasky@suse.cz>
Date: Sun, 3 Aug 2008 19:43:07 +0200
Subject: [PATCH] tg-info.sh: Show missing dependencies (needs_update()
 enhancement)

needs_update() now verifies if the _dep refs exists and adds it
to a $missing_deps list if that's not the case.
---
 tg-info.sh | 4 ++++
 tg.sh      | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/tg-info.sh b/tg-info.sh
index 2a6fd44..c95677f 100644
--- a/tg-info.sh
+++ b/tg-info.sh
@@ -42,7 +42,11 @@ deps="$(git cat-file blob "$name:.topdeps" | paste -s -d' ')"
 echo "Depends: $deps"
 
 depcheck="$(mktemp)"
+missing_deps=
 needs_update "$name" >"$depcheck"
+if [ -n "$missing_deps" ]; then
+	echo "MISSING: $missing_deps"
+fi
 if [ -s "$depcheck" ]; then
 	echo "Needs update from:"
 	cat "$depcheck" |
diff --git a/tg.sh b/tg.sh
index e27ff30..ee14e62 100644
--- a/tg.sh
+++ b/tg.sh
@@ -85,11 +85,19 @@ branch_contains()
 # to the branch (e.g. B_DIRTY B1 B2 NAME), one path per line,
 # inner paths first. Innermost name can be ':' if the head is
 # not in sync with the base.
+# If needs_update() hits missing dependencies, it will append
+# them to space-separated $missing_deps list and skip them.
 needs_update()
 {
 	{
 	git cat-file blob "$1:.topdeps" 2>/dev/null |
 		while read _dep; do
+			if !git rev-parse --verify "$_dep" >/dev/null 2>&1; then
+				# All hope is lost
+				missing_deps="$missing_deps $_dep"
+				continue
+			fi
+
 			_dep_is_tgish=1
 			git rev-parse --verify "refs/top-bases/$_dep" >/dev/null 2>&1 ||
 				_dep_is_tgish=
-- 
2.30.2