Hi Mosè and David,
>>>>> David Kastrup <d...@gnu.org> writes:
> Mosè Giordano <m...@gnu.org> writes:
>> I seem to remember David explained that "\input" was used to make
>> something work (region-compilation?). I looked for this explanation
>> in my inbox but I can't find it, hopefully David can tell us more. If
>> "\input" is really not needed anymore then removing "\input" when
>> calling TeX is a good solution.
> I think it was for setting interaction mode in a reasonably portable
> way. At the current point of time, we likely just have to deal with
> MikTeX and TeXlive.
Thank you for responses. I performed search on the ML archive and seem
to find the David's message which Mosè mentioned:
https://lists.gnu.org/archive/html/auctex-devel/2008-05/msg00055.html
First, David worried about the case some TeX codes are put on the
command line like this:
latex -interaction=nonstopmode \SOME_CODE FILENAME
My impression is that such case is extremely rare, at least when the
default `TeX-command-list' is used. (In theory, a user can put TeX
codes by either setting `TeX-command-extra-options' or customizing
`TeX-expand-list' to override the default expansion of the directives
such as "%(mode)", "%(file-line-error)" and so on, but...) So I expect
we can live without \input as long as we take care of preview-latex to
work with \input.
David, what do you think about this?
Next, David pointed out that removing \input does not help %&-parsing of
the first line in the case of region compilation. (This is not a reason
that \input is necessary, I think.)
This is a problem I looked over, and I expect that the attached
additional patch covers the point.
Regards,
Ikumi Keita
P.S. Two notes about my previous patch
(1) According to texdoc etex, \detokenize was added in e-TeX extension.
So if the user has quite old TeX distribution where e-TeX extension was
not incorporated in the engine (command binary) yet, \detokenize raises
error. I hope this is a permissible incompatibility.
(2) This patch incidentally fixes Bug#25276:
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=25276
The problem is present only in xetex engine on w32 platform. Both the
form without \input and with \input \detokenize{} works well even when
the file name contains space, while the form with \input only (original
AUCTeX form) stops with an error.
diff --git a/tex-buf.el b/tex-buf.el
--- a/tex-buf.el
+++ b/tex-buf.el
@@ -2092,8 +2092,10 @@
(if (not (re-search-forward TeX-header-end nil t))
""
(re-search-forward "[\r\n]" nil t)
- (buffer-substring (point-min) (point)))))))))
+ (buffer-substring-no-properties
+ (point-min) (point)))))))))
(header-offset 0)
+ first-line
;; We search for the trailer from the master file, if it is
;; not present in the region.
(trailer-offset 0)
@@ -2113,11 +2115,24 @@
;;(beginning-of-line 1)
(re-search-backward "[\r\n]" nil t)
(setq trailer-offset (TeX-current-offset))
- (buffer-substring (point) (point-max))))))))))
+ (buffer-substring-no-properties
+ (point) (point-max))))))))))
;; file name should be relative to master
(setq original (TeX-quote-filename (file-relative-name
original (TeX-master-directory)))
master-name (TeX-quote-filename master-name))
+
+ ;; Cater for %&FORMAT construct in the first line.
+ (setq first-line (if (and (> (length header) 1)
+ (string= (substring header 0 2) "%&"))
+ ;; This would work even if header has no newline.
+ (substring header 0 (string-match "\n" header))
+ ""))
+ (unless (string= first-line "")
+ ;; Remove first-line from header.
+ (setq header (substring header (length first-line)))
+ (setq first-line (concat first-line "\n")))
+
(with-current-buffer file-buffer
(setq buffer-read-only t
buffer-undo-list t)
@@ -2127,7 +2142,8 @@
(when (boundp 'buffer-file-coding-system)
(setq buffer-file-coding-system
(with-current-buffer master-buffer buffer-file-coding-system)))
- (insert "\\message{ !name(" master-name ")}"
+ (insert first-line
+ "\\message{ !name(" master-name ")}"
header
TeX-region-extra
"\n\\message{ !name(" original ") !offset(")
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