Shell: factor out updating the path cache into a function.

Author: https://github.com/math2001
Commit: 0622b60fbd
Pull-request: https://github.com/SerenityOS/serenity/pull/2972
Reviewed-by: https://github.com/alimpfard ✅

Shell/AST.cpp

@@ -367,9 +367,9 @@ RefPtr<Value> BarewordLiteral::run(RefPtr<Shell>)
 void BarewordLiteral::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
 {
     if (metadata.is_first_in_list) {
-        if (shell.is_runnable(m_text))
+        if (shell.is_runnable(m_text)) {
             editor.stylize({ m_position.start_offset, m_position.end_offset }, { Line::Style::Bold });
-        else {
+        } else {
             editor.stylize({ m_position.start_offset, m_position.end_offset }, { Line::Style::Foreground(Line::Style::XtermColor::Red) });
         }