optimize docgen

docgen.sh

@@ -112,9 +112,10 @@ do
     parsers+=("$value")
 done < <(jc -a | jq -c '.parsers[] | select(.plugin != true)')
 
-for parser in "${parsers[@]}"
-do (
+for parser in "${parsers[@]}"; do
+    (
         parser_name=$(jq -r '.name' <<< "$parser")
+        if ! git diff --exit-code -- "jc/parsers/${parser_name}.py"; then
             compatible=$(jq -r '.compatible | join(", ")' <<< "$parser")
             version=$(jq -r '.version' <<< "$parser")
             author=$(jq -r '.author' <<< "$parser")
@@ -128,6 +129,7 @@ do (
             echo >> ../docs/parsers/"${parser_name}".md
             echo "Version ${version} by ${author} (${author_email})" >> ../docs/parsers/"${parser_name}".md
             echo "+++ ${parser_name} docs complete"
+        fi
     ) &
 done
 wait