GNU bug report logs - #53276
The blink-cursor-mode not work after startup on macOS

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From: Po Lu <luangruo <at> yahoo.com>
To: Eason Huang <aqua0210 <at> foxmail.com>
Cc: Alan Third <alan <at> idiocy.org>, 53276 <at> debbugs.gnu.org
Subject: bug#53276: The blink-cursor-mode not work after startup on macOS
Date: Sat, 15 Jan 2022 15:04:35 +0800

Eason Huang <aqua0210 <at> foxmail.com> writes:

> When Emacs is started at the first time, the blink-cursor-mode does
> not work, and the focus needs to be switched to another
> application, and then switching back again, it will work properly.

blink-cursor-mode will only start the idle timer that actually blinks
the cursor if at least one frame is focused, but no FOCUS_IN_EVENT is
sent until windowDidBecomeKey is called a second time, as emacs_event is
NULL when windowDidBecomeKey is first called.  This is both on GNUstep
and macOS.  (Perhaps storing the FOCUS_IN_EVENT into the keyboard buffer
would be an option.)

Alan, do you have any idea as to why this is?  I'm afraid I don't really
understand the NS event loop code.

Thanks in advance.

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