Too many spaces (around 20) after line containing string interpolation will cause editor to crash

I’m submitting a bug report

• Extension Version: 1.0.1

Please tell us about your environment:

• Operating System: OSX 10.x|Windows 7 (I have confirmed on both)

• Visual studio code version: 1.20.1

HTML/JS/TS of incorrect highlight note: I have render whitespace set to ‘all’ in this screenshot.

Current behavior: Not an incorrect highlight so much as each additional space after about ~20 will cause cpu usage to spike. Simply holding down space bar should be enough to trigger a hard lock of the application

Expected/desired behavior: Code to not crash when there’s too much whitespace after a line featuring string interpolation

• What is the motivation / use case for changing the behavior? It’s annoying to have the editor crash when I backspace at the start of an empty line to remove it, only to have the whitespace append to the previous line, and cause the editor to crash.

Update:

The spaces do not have to be contiguous, so this bug would also hit anyone who has ~20 words after an aurelia interpolation, and on the same line.

${a} aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa is fine ${a} a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a will crash ${a} ............................................................... (spaces) will crash.

Possibly some error in tokenisation there somewhere.

[eriklieben]

Was a bit overloaded with work this week, will look at it this weekend

[eriklieben]

Tested and implemented the fix, @darthInvad0r thanks for the helping out fixing the issue!

Will release a new version in a bit.