+meta_file(){
+ local file meta name
+ file="$1"
+ meta="${file%/*}/.index/meta"
+ name="$(meta_name "$file")"
+
+ if [ -d "${meta%/meta}" ] && LOCK "$meta"; then
+ grep -avF " ${name}" "$meta" >"$meta.tmp"
+ meta_line "$file" \
+ | tee -a "$meta.tmp"
+ mv "$meta.tmp" "$meta"
+ RELEASE "$meta"
+ fi
+}
+
+meta_purge(){
+ local file meta name
+ file="$1"
+ meta="${file%/*}/.index/meta"
+ name="$(meta_name "$file")"
+
+ if [ -d "${meta%/meta}" ] && LOCK "$meta"; then
+ grep -avF " ${name}" "$meta" >"${meta}.tmp"
+ grep -aF " ${name}" "$meta" >>"${meta}.trash"
+ mv "${meta}.tmp" "$meta"
+ RELEASE "$meta"
+ fi
+}
+
+meta_info(){
+ local file meta
+ file="$1"; meta="${file%/*}/.index/meta"
+
+ if [ -d "${meta%/meta}" ]; then
+ grep -aF " $(meta_name "$file")" "$meta" \
+ | grep -m1 -axE '[0-9]+ [0-9]+ [0-9]+ tags=[^ ]* comment=[^ ]* .+' \
+ || meta_file "$file"
+ else
+ printf '0\t0\t0\ttags=\tcomment=\t%s\r' "$(meta_name "$file")"
+ fi
+}
+