Support comma list of plugins for --disable, --enable options. (svg#1019

)

support comma list of plugins for --disable, --enable options

README.md

@@ -92,8 +92,8 @@ Options:
   -o OUTPUT, --output=OUTPUT : Output file or folder (by default the same as the input), "-" for STDOUT
   -p PRECISION, --precision=PRECISION : Set number of digits in the fractional part, overrides plugins params
   --config=CONFIG : Config file or JSON string to extend or replace default
-  --disable=PLUGIN : Disable plugin by name, "--disable={PLUGIN1,PLUGIN2}" for multiple plugins (*nix)
-  --enable=PLUGIN : Enable plugin by name, "--enable={PLUGIN3,PLUGIN4}" for multiple plugins (*nix)
+  --disable=PLUGIN : Disable plugin by name, "--disable=PLUGIN1,PLUGIN2" for multiple plugins
+  --enable=PLUGIN : Enable plugin by name, "--enable=PLUGIN3,PLUGIN4" for multiple plugins
   --datauri=DATAURI : Output as Data URI string (base64, URI encoded or unencoded)
   --multipass : Enable multipass
   --pretty : Make SVG pretty printed

lib/svgo/coa.js

@@ -308,6 +308,8 @@ module.exports = require('coa').Cmd()
  * @return {Object} changed config
  */
 function changePluginsState(names, state, config) {
+    names.forEach(flattenPluginsCbk);
+
     // extend config
     if (config.plugins) {
         for (var name of names) {
@@ -347,6 +349,25 @@ function changePluginsState(names, state, config) {
     return config;
 }
 
+/**
+ * Flatten an array of plugins by invoking this callback on each element
+ * whose value may be a comma separated list of plugins.
+ * 
+ * @param {String} name Plugin name
+ * @param {Number} index Plugin index
+ * @param {Array} names Plugins being traversed
+ */
+function flattenPluginsCbk(name, index, names)
+{
+    var split = name.split(',');
+
+    if(split.length > 1) {
+        names[index] = split.shift();
+        names.push.apply(names, split);
+    }
+
+}
+
 /**
  * Optimize SVG files in a directory.
  * @param {Object} config options