assum blob not empty

.githooks/post-merge

@@ -23,12 +23,10 @@ get_blob () {   # get the blob of the file(name) passed as $1
 }
 
 get_commit_for_blob () {
-    if [ ! -z $1 ]; then
     # search for the blob in all commits for the file(name) $1
     echo $(echo $(git log --all --pretty=format:%H -- $1) |
            xargs -I{} bash -c "git ls-tree {} -- $1       |
            grep -q $1 && echo {}")
-    fi
 }
 
 changed_file_names () {
@@ -49,7 +47,7 @@ for fn in $(git diff-tree -r HEAD@{1} HEAD --name-only); do
             blob=$(get_blob "$fn")
             commit=$(get_commit_for_blob $blob)
             fsize=$(ls -l "$fn" | awk '{ print $5 }')
-            echo "$fn $fsize $blob $commit" >> $GIT_PULL_TMP
+            echo "$fn $fsize b=$blob c=$commit" >> $GIT_PULL_TMP
         fi
     fi
     if grep -E -q ".*opkg_commands" <<< $fn; then