Strange behavior of tab-bar-mode and first-time appearance after
session load
reddit / emacs

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JohnDoe365 · 2022-05-09 06:28

Using Emacs 29.0.50 on Windows 10.

When I have tabs open, close Emacs, the sessions gets saved. When  I
re-open Emacs with that session, my tab-bar looks like this:

​

https://preview.redd.it/oklxyu4s8ey81.png?width=516&format=png&auto=we
bp&s=ef6cce16117bc4bc67fc78fd3fe3cd900c81c216

The first time I click on a tab, the associated window opens yet the
tab-bar disappears. When I re-enable tab-bar with tab-bar-mode the
tabs get re-displayed yet the appearance is different:

​

https://preview.redd.it/si0om1839ey81.png?width=458&format=png&auto=we
bp&s=5fd24a3ea6b0bce7a58238d9dc222cbfbde40688

​

You see the small 'x' next to the tab name? This tab-bar behaves
normally though.

​

The initial behavior is annoying with the tab-bar disappearing.
Anybody experiencing this behavior too? Is this a 'feature' I have to
come by with some init.el settings or a bug I should report?

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Extension_Try_6870 · 2022-05-09 16:51

I'm using emacs 28 and I have the same problem. The little "x"s get
replaced with a big "X" after reopening a session (desktop.el).

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redblobgames · 2022-05-09 21:27

It seems like `tab-bar--load-buttons` should've set the x icon for
you, but I don't know why it wouldn't have run.

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jimehgeek · 2022-05-11 08:28

I’m not sure about your exact issue, bit for me when loading a session
with tabs, the tab bar doesn’t show until I create a new tab.

My understanding is that because I have no tabs and viable tab bar
when loading the session, no tab bar code is run when the session is
loaded. It simply sets the `tabs` frame parameter to the value saved
in the session. Hence next time I invoke any commands that checks off
the tab bar should be visible, that’s when it’s actually displayed.

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link0ff · 2022-05-13 17:23

Thanks for the bug report.  This is fixed now in Emacs 29.