I'm using doom emacs.

I've enabled treemacs in ~/.doom.d/init.el


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I couldn't resize the project sidebar. I have tried this mac OS and opensuse 15.1

I get message <left-fringe> <mouse-drag-1> is undefined. Do I miss any configuration?


Either set treemacs-width explicitly by adding something like (setq treemacs-width 30) to ~/.doom.d/config.el

Otherwise press tw to toggle fixed-width mode in treemacs, then you can resize it.

Adding (setq treemacs--width-is-locked nil) to ~/.doom.d/config.el may work too

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