How to get the real width of window

[C-Entropy]

Hi, dear developers.

When using with popwin, popwin need to use the width of window, by (window-width root-win), which olivetti mode will change.
For example, while the true value of the window is 120, it may reduce it to 82.

As a result, when using something like

(push '(" *undo-tree*" :width 0.3 :position right) popwin:special-display-config)

popwin get the wrong width, and the popwin window is too large than it should be.

Is it possible to get the real width of window?

I have open an issue here, too. emacsorphanage/popwin#151

[rnkn]

If I understand correctly you want the width of the window plus fringes and margins, in columns? You can get this with:

(/ (window-pixel-width) (frame-char-width))

[C-Entropy]

Yes, it works perfectly for me, great thanks!