Emmet slows down editing Dart files

[sethladd]

Hi,

If we have emmet and the dartlang plugin installed, and we're editing a large Dart file (>1000 lines), and we hit 'enter', we see a delay of 1-2 seconds before the newline is inserted.

If we remove the emmet plugin, we no longer see a delay.

Could it be possible that Emmet is trying to do work inside of a Dart file?

Thanks!

--- Want to back this issue? **[Post a bounty on it!](https://www.bountysource.com/issues/25698655-emmet-slows-down-editing-dart-files?utm_campaign=plugin&utm_content=tracker%2F535900&utm_medium=issues&utm_source=github)** We accept bounties via [Bountysource](https://www.bountysource.com/?utm_campaign=plugin&utm_content=tracker%2F535900&utm_medium=issues&utm_source=github).

[sethladd]

Here is the plugin: https://github.com/dart-atom/dartlang

[sethladd]

cc @devoncarew

[devoncarew]

For background, when we first saw this issue a few weeks ago, I did some profiling in devtools and 90% of the time was spent in emmet and regexs.

[patrys]

Possibly the same issue? #317

[carstenh]

I had the same problem with every file > 700 lines. I just commented out in packages/emmet/keymaps/emmet.cson:

'atom-pane atom-text-editor[data-grammar~="html"]:not([mini]):not(.autocomplete-active), atom-pane atom-text-editor[data-grammar~="xml"]:not([mini]):not(.autocomplete-active)': 'enter': 'emmet:insert-formatted-line-break-only'

and added a custom one in my own keymap file:

'atom-pane atom-text-editor[data-grammar~="xml"]:not([mini]):not(.autocomplete-active)': 'enter': 'editor:new-line'

When I hit enter, there is no lag anymore.

[sergeche]

This issue seems to be fixed already?

[abdelouahabb]

the issue still opened ? We need Dart because of Flutter