fix: ignore initial whitespaces when modifying words

Signed-off-by: Snehil Shah <[email protected]>

lib/node_modules/@stdlib/repl/lib/editor_actions.js

@@ -34,6 +34,7 @@ var parseKey = require( './parse_key.js' );
 
 // VARIABLES //
 
+var RE_NON_WHITESPACE = /\S+/;
 var EDITOR_ACTIONS = [
 	'moveRight',
 	'moveLeft',
@@ -167,14 +168,22 @@ setNonEnumerableReadOnly( EditorActions.prototype, '_replaceLine', function repl
 setNonEnumerableReadOnly( EditorActions.prototype, '_modifyNextWord', function modifyNextWord( modifier ) {
 	var updatedLine;
 	var substring;
+	var match;
+	var start;
 	var end;
 
-	end = this._rli.line.indexOf( ' ', this._rli.cursor + 1 );
-	if ( end === -1 ) {
+	// Use regex to find the first non-whitespace character and the end of the word after the cursor:
+	match = this._rli.line.slice( this._rli.cursor ).match( RE_NON_WHITESPACE );
+	if ( match ) {
+		start = this._rli.cursor + match.index;
+		end = start + match[ 0 ].length;
+	} else {
+		start = this._rli.cursor;
 		end = this._rli.line.length;
 	}
-	substring = this._rli.line.slice( this._rli.cursor, end );
-	updatedLine = this._rli.line.slice( 0, this._rli.cursor ) + modifier( substring ) + this._rli.line.slice( end ); // eslint-disable-line max-len
+	// Extract the word, apply the modifier, and reconstruct the line:
+	substring = this._rli.line.slice( start, end );
+	updatedLine = this._rli.line.slice( 0, start ) + modifier( substring ) + this._rli.line.slice( end ); // eslint-disable-line max-len
 	this._replaceLine( updatedLine );
 	this._moveCursorX( end - this._rli.line.length );
 });