refactor(cppcheck): use _comp_delimited

Author: akinomyoga

completions/cppcheck

@@ -16,17 +16,8 @@ _comp_cmd_cppcheck()
             return
             ;;
         --enable)
-            # split comma-separated list
-            local split=""
-            if [[ $cur == ?*,* ]]; then
-                prev="${cur%,*}"
-                cur="${cur##*,}"
-                split="set"
-            fi
-            _comp_compgen -- -W 'all warning style performance portability
-                information unusedFunction missingInclude' &&
-                [[ $split ]] &&
-                _comp_compgen -Rv COMPREPLY -- -P "$prev," -W '"${COMPREPLY[@]}"'
+            _comp_delimited , -W 'all warning style performance portability
+                information unusedFunction missingInclude'
             return
             ;;
         --error-exitcode)