# HG changeset patch
# User Daniel Hahler <git@thequod.de>
# Date 1459951779 -7200
# Node ID e1f787e8d77c6c6c580558a258c43e706ceee7d0
# Parent  df3b0ca480139292e5a6524d264889cc045d0a07
Make pattern for removal of existing lines more specific

Explicitly match the file name in the second tab-delimited column.

Also, add a "|| true" to handle the case where no lines would be
selected by grep (e.g. after `touch tags` and only updating a single
file).

diff -r df3b0ca48013 -r e1f787e8d77c plat/unix/update_tags.sh
--- a/plat/unix/update_tags.sh	Fri Mar 25 20:41:38 2016 -0700
+++ b/plat/unix/update_tags.sh	Wed Apr 06 16:09:39 2016 +0200
@@ -73,8 +73,10 @@
 if [ -f "$TAGS_FILE" ]; then
     if [ "$UPDATED_SOURCE" != "" ]; then
         echo "Removing references to: $UPDATED_SOURCE"
-        echo "grep -v \"$UPDATED_SOURCE\" \"$TAGS_FILE\" > \"$TAGS_FILE.temp\""
-        grep -v "$UPDATED_SOURCE" "$TAGS_FILE" > "$TAGS_FILE.temp"
+        tab="	"
+        cmd="grep -Ev '^[^$tab]+$tab$UPDATED_SOURCE$tab' '$TAGS_FILE' > '$TAGS_FILE.temp'"
+        echo "$cmd"
+        eval "$cmd" || true
         INDEX_WHOLE_PROJECT=0
     fi
 fi