While editing the ~/.emacs file in emacs, the machine rebooted (kernel panic I believe). This left a lock file behind.
The ~/.emacs file is actually a softlink:
.emacs -> /Users/<username>/Dropbox/Documents/Projects/emacs/dotemacs
The fact that it's a softlink may or may not be relevant.
In ~/Dropbox/Documents/Projects/emacs/, there was a file: .#dotemacs
After the reboot, I started emacs, and continued with further edits to .emacs. Upon saving .emacs, had the following warning:
⛔ Warning (unlock-file): Unlocking file: Invalid argument, ~/Dropbox/Documents/Projects/emacs/dotemacs, ignored
As per the warning, the save was nonetheless successful.
Invoking file-locked-p directly, I saw the same error, and the following debug info:
Debugger entered--Lisp error: (file-error "Testing file lock" "Invalid argument" "~/Dropbox/Documents/Projects/emacs/dotemacs")
file-locked-p("~/Dropbox/Documents/Projects/emacs/dotemacs")
eval((file-locked-p "~/Dropbox/Documents/Projects/emacs/dotemacs") t)
eval-_expression_((file-locked-p "~/Dropbox/Documents/Projects/emacs/dotemacs") nil nil 127)
funcall-interactively(eval-_expression_ (file-locked-p "~/Dropbox/Documents/Projects/emacs/dotemacs") nil nil 127)
call-interactively(eval-_expression_ nil nil)
command-execute(eval-_expression_)
After removing the lock file manually, the warning on save goes away:
rm ~/Dropbox/Documents/Projects/emacs/.#dotemacs
Access flags on dotemacs file are as follows:
-rw-r--r--@ 1 dgreatwood staff 133806 May 15 16:01 dotemacs
lrwxr-xr-x 1 dgreatwood staff 59 Dec 6 2015 .emacs -> ...
Thanks.
----
In GNU Emacs 29.1 (build 1, aarch64-apple-darwin21.6.0, NS
appkit-2113.60 Version 12.6.6 (Build 21G646)) of 2023-08-16 built on
armbob.lan
Windowing system distributor 'Apple', version 10.3.2487
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