Cannot get 'grid: true' to work with Brackets Extension

[aaadddzzzIP]

Just installed latest autoprefixer extension into latest version of Brackets.

First time using autoprefixer. I'm currently running windows 10.

Settings are

• visual cascade (unchecked)
• Browsers
  -- '> 1%'
  -- 'last 4 versions'
  -- 'Firefox ESR'
  -- 'not ie < 10'

I am testing with a snippet of code I know to have no bugs, I have autoprefixed this snippet online using https://autoprefixer.github.io/. The autoprefixed snippet, which includes auto-prefixed grid properties, works great in IE.

I cannot get the same autoprefix result in Brackets. With the above settings no grid CSS is altered, although other autoprefixing does occur (I understand the default is 'grid: false').

How do I change this default using the Brackets extension? I have tried:

• In settings adding another setting under Browsers 'grid: true'. This stops all autoprefixing.
• In settings adding another setting under Browsers 'grid: on'. This stops all autoprefixing.
• adding a comment to the top of my CSS sheet '/* autoprefixer grid: on */'. Autoprefixing works, but not for grid properties.

I'm a complete novice, any help would be appreciated!

Cheers,

A.

[ai]

@aaadddzzzIP uses very old Autoprefixer, which didn’t support grid: true.

Use Gup with PostCSS and Autoprefixer instead. It is a much better way: https://github.com/postcss/autoprefixer#text-editors-and-ide

[ai]

@mikaeljorhult can we update Autoprefixer? We need 9.3.1 (current is 7.x).