tg-info.sh: Show missing dependencies (needs_update() enhancement)

[topgit.git] / tg.sh

diff --git a/tg.sh b/tg.sh
index e27ff3072d5da60dcc2e45dd7b806de6fa817625..ee14e62860c2a34bda48aecdc7162128bf83fb48 100644 (file)
--- 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=