Misaligned indentation guides with font ligatures

[mlajtos]

Hi Alexandru :)

monaco-editor version: 0.12.0
Browser: Chrome Canary
OS: macOS 10.13.3

Relevant config:

{
    fontFamily: "Fira Code",
    fontLigatures: true
}

Illustration:

I turned them off for now with:

{
    renderIndentGuides: false
}

Thanks

[alexdima]

The indent guides are rendered every N space widths.
https://github.com/Microsoft/vscode/blob/01169b16171dd381816f08daec793792be7d9151/src/vs/editor/browser/viewParts/indentGuides/indentGuides.ts#L135

https://github.com/Microsoft/vscode/blob/01169b16171dd381816f08daec793792be7d9151/src/vs/editor/browser/viewParts/indentGuides/indentGuides.ts#L107

Perhaps you are using a lazy loaded font family i.e. are you running into #392 ?

i.e. perhaps we are computing the width of a space at a time when the font hasn't yet been loaded by the browser ?

[mlajtos]

You are right. Waiting for the font helped. Thank you :)