tg-update.sh: Better explain base update

diff --git a/tg-update.sh b/tg-update.sh
index 50b29b426ac46acb8a427bc88d934ef5c57e3b23..5caf6910a17f7c39906fe6456bd550faf4b537c2 100644 (file)
--- a/tg-update.sh
+++ b/tg-update.sh
@@ -43,9 +43,9 @@ if [ -s "$depcheck" ]; then
                        dep="$(echo "$depline" | cut -c 2-)"
 
                        # We do not distinguish between dependencies out-of-date
-                       # and base out-of-date cases for $dep here, but thanks
-                       # to needs_update returning : for the latter, we do
-                       # correctly recurse here in both cases.
+                       # and base out-of-date cases for $dep here,
+                       # but thanks to needs_update returning : for the latter,
+                       # we do correctly recurse here in both cases.
 
                        if [ x"$action" = x+ ]; then
                                info "Recursing to $dep..."
@@ -67,6 +67,12 @@ if [ -s "$depcheck" ]; then
                                switch_to_base "$name"
                        fi
 
+                       # This will always be a proper topic branch
+                       # (not a base or remote), since for deep updates
+                       # we recurse and immediate dependencies
+                       # are always proper. (branch_needs_update() is called
+                       # only on the _dependencies_, not our branch itself!)
+
                        info "Updating base with $dep changes..."
                        if ! git merge "$dep"; then
                                if [ -z "$TG_RECURSIVE" ]; then