tree 3401170ce7308ec91693c3f247a9101373784e0f
parent 5b4af69f9e815e7e66568bd0b2cc47113e399c66
author Scott Graham <scottmg@chromium.org> 1573157984 -0800
committer Commit Bot <commit-bot@chromium.org> 1573172629 +0000

[format] Convert invalid whitespace to space when loading for format

I've been forced to edit a lot of Go code recently where tabs are much
loved, and my Vim occasionally gets horked and sneaks tabs into my .gn
files.

After that, running `gn format` on the BUILD.gn complains about

    ERROR at //.../BUILD.gn:5:1: Invalid token.
            sources = [
    ^
    You got a tab character in here. Tabs are evil. Convert to spaces.

It just seems petty to make me manually replace them! So only when
parsing for format purposes, silently transform tabs (and since we're
here vertical tabs and form feeds too) to spaces outside of quoted
strings. Maintain the error in normal operation though.

Change-Id: Ia4099be3bbd9621e75479d4bfa734862f6c5bccf
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/6500
Reviewed-by: Brett Wilson <brettw@chromium.org>
Commit-Queue: Brett Wilson <brettw@chromium.org>