Code tidy from review suggestions

index.js

@@ -1155,14 +1155,13 @@ Command.prototype.optionHelp = function() {
 
   var columns = process.stdout.columns || 80;
   var descriptionWidth = columns - width - 4;
-  var minWidth = 40;
 
   // Append the help information
   return this.options.map(function(option) {
     const fullDesc = option.description +
       ((!option.negate && option.defaultValue !== undefined) ? ' (default: ' + JSON.stringify(option.defaultValue) + ')' : '');
-    return pad(option.flags, width) + '  ' + optionalWrap(fullDesc, descriptionWidth, width + 2, minWidth);
-  }).concat([pad(this._helpFlags, width) + '  ' + optionalWrap(this._helpDescription, descriptionWidth, width + 2, minWidth)])
+    return pad(option.flags, width) + '  ' + optionalWrap(fullDesc, descriptionWidth, width + 2);
+  }).concat([pad(this._helpFlags, width) + '  ' + optionalWrap(this._helpDescription, descriptionWidth, width + 2)])
     .join('\n');
 };
 
@@ -1181,13 +1180,12 @@ Command.prototype.commandHelp = function() {
 
   var columns = process.stdout.columns || 80;
   var descriptionWidth = columns - width - 4;
-  var minWidth = 40;
 
   return [
     'Commands:',
     commands.map(function(cmd) {
       var desc = cmd[1] ? '  ' + cmd[1] : '';
-      return (desc ? pad(cmd[0], width) : cmd[0]) + optionalWrap(desc, descriptionWidth, width + 2, minWidth);
+      return (desc ? pad(cmd[0], width) : cmd[0]) + optionalWrap(desc, descriptionWidth, width + 2);
     }).join('\n').replace(/^/gm, '  '),
     ''
   ].join('\n');
@@ -1353,32 +1351,33 @@ function pad(str, width) {
 function wrap(str, width, indent) {
   var regex = new RegExp('.{1,' + (width - 1) + '}([\\s\u200B]|$)|[^\\s\u200B]+?([\\s\u200B]|$)', 'g');
   var lines = str.match(regex) || [];
-  var result = lines.map(function(line, i) {
+  return lines.map(function(line, i) {
     if (line.slice(-1) === '\n') {
       line = line.slice(0, line.length - 1);
     }
     return ((i > 0 && indent) ? Array(indent + 1).join(' ') : '') + line;
   }).join('\n');
-  return result;
 }
 
 /**
  * Optionally wrap the given str to a max width of width characters per line
- * while indenting with indent spaces. Do not wrap the text when the minWidth
- * is not hit.
+ * while indenting with indent spaces. Do not wrap if insufficient width or
+ * string is manually formatted.
  *
  * @param {String} str
  * @param {Number} width
  * @param {Number} indent
  * @return {String}
  * @api private
  */
-function optionalWrap(str, width, indent, minWidth) {
-  // detected manually wrapped and indented strings by searching for line breaks
-  // followed by multiple spaces/tabs
+function optionalWrap(str, width, indent) {
+  // Detect manually wrapped and indented strings by searching for line breaks
+  // followed by multiple spaces/tabs.
   if (str.match(/[\n]\s+/)) return str;
-  // check if minimum width is reached
+  // Do not wrap to narrow columns (or can end up with a word per line).
+  const minWidth = 40;
   if (width < minWidth) return str;
+
   return wrap(str, width, indent);
 }