highlight-column

Highlight column the cursor is at
tony612
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Highlight-column Build Status

Install it with apm command

apm install highlight-column

or from Settings

Highlight column the cursor is at.

Screenshot with dark theme

And for light theme

Screenshot with dark theme

You can toggle the highlight temporarily by running 'Highlight Column: Toggle' after clicking 'cmd+shift+p'.

And the opacity can be configured in the package settings.