Pug - Broken syntax coloring using character "ª" inside an interpolated tag

[alexdima]

Moved from microsoft/vscode#22969
From @patoezequiel

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• VSCode Version: 1.9.0
• OS Version: Windows 7 ultimate SP1
• Extensions installed:
  • Autoprefixer 2.0.0
  • Pug to HTML 0.0.3
  • SCSS Intellisense 0.6.0

I found a bug in the pug syntax coloring, where if you type a " ª " character inside an interpolated string, it makes the text after said character to be colored like a keyword.

Steps to Reproduce:

1. In a .pug file, introduce the " ª " character inside the text node of an interpolated tag, for instance:

p The coloring breaks after the #[strong ª] character.

2. The syntax coloring after the " ª " character breaks, coloring almost anything like a keyword.

It happens independently of the color theme applied to the editor, and the bug appears to be only when that specific character is used, you can see that the " º " character in the picture doesn't cause problems in the same circumstances.