When I run cal-tex-cursor-month in calendar mode, I'm supposed to get a LaTeX
calendar buffer for the month the cursor is on. This works as expected with
emacs -Q, but in my setup (using auctex), I'm getting a "Wrong type argument:
stringp, nil" error.
As far as I can tell by turning debugging on, here's whats happening.
cal-tex-cursor-month calls latex-mode, which activates the auctex provided mode
for me.
This eventually leads to a call to reftex-TeX-master-file, which correctly
determines that auctex is loaded (instead of the default Emacs latex mode), and
calls TeX-master-file.
Early on in TeX-master-file, there is this code.
(let ((my-name (if (buffer-file-name)
(TeX-strip-extension nil (list TeX-default-extension) t)
"<none>")))
I'm guessing the main cause of the problem is that the buffer in which the
LaTeX code has been dumped is called calendar.tex, but hasn't been saved yet,
so (buffer-file-name) returns nil.
I haven't been able to fully understand what's going on in the rest of
TeX-master-file, but it appears to return <none>.tex as master to
reftex-TeX-master-file.
Because master is not nil, the (null master) check (line 383 of reftex.el in my
version) fails, and I don't get the "Need a filename for this buffer, please
save it first" error. Instead, reftex-TeX-master-file calls (expand-file-name
nil) at the end, which dies with the "Wrong type argument: stringp, nil" error.
Sorry for that loong story. What's the quickest way to fix this? And what would
be the "best" way to fix this: in cal-tex-cursor-month, reftex-TeX-master-file,
or TeX-master-file?
Thanks for any suggestions!
-mandar
