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Subject: |
compilation-error-regexp-alist just assumes columns not characters |
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Date: |
Sat, 10 Dec 2011 04:18:12 +0800 |
Gentlemen, why does *compilation* say
basex -b y=3 TaiwanAMFMSW.xq
Stopped at line 57, column 29 in
/home/jidanni/millerliu/xquery/TaiwanAMFMSW.xq:
[XPST0003] Expecting "return", found "r".
But the cursor upon next-error ends up at
case "TaiwanAMFMSW_by_band" retrun let $K:= "AM/FM/SW" return ()
^ ^
A, not B if those blanks at front were a TAB.
Well that is because on
(describe-variable (quote compilation-error-regexp-alist))
there is nary a mention of what to do when the compiler making the
message is counting characters (TAB=1) and emacs is thinking it is
counting columns (TAB=8, etc.).
All we see is
COLUMN can also be of the form (COLUMN . END-COLUMN) meaning a range of
columns starting on LINE and ending on END-LINE, if that matched.
There is no way to communicate to emacs that this certain compiler does
not know how many columns a TAB equals in emacs, and is just reporting a
character count from the last newline.
So one is forced to untabify ones source files!
So it seems that compilation-error-regexp-alist needs an extra parameter
to tell if we are just counting characters or actually counting columns.
P.S., guess what happens when there are wide characters involved,
case "補補補TaiwanAMFMSW_by_band" retrun let $K:= "AM/FM/SW" return ()
you guessed it!
How can I tell emacs in
(add-to-list 'compilation-error-regexp-alist-alist
'(basex "^Stopped at line \\([0-9]+\\), column \\([0-9]+\\) in \\(.*?\\):$"
3 1 2))
(add-to-list 'compilation-error-regexp-alist 'basex)
that "column" means "char"?
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--- Begin Message ---
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Subject: |
Re: bug#10258: compilation-error-regexp-alist just assumes columns not characters |
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Date: |
Tue, 27 Dec 2011 18:49:07 -0500 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux) |
SM> Better not call make-variable-buffer-local except...
> OK thanks. Maybe
> (info "(emacs) Locals")
> more precisely,
> (Info-menu "Emacs (emacs-snapshot)" nil)
> (Info-index "make-variable-buffer-local")
> should warn/hint about that, just like
> (describe-function (quote make-variable-buffer-local))
> already does.
Indeed. I've installed the patch below,
Stefan
=== modified file 'doc/lispref/variables.texi'
--- doc/lispref/variables.texi 2011-12-23 13:14:12 +0000
+++ doc/lispref/variables.texi 2011-12-27 23:42:22 +0000
@@ -1352,6 +1352,8 @@
This function marks @var{variable} (a symbol) automatically
buffer-local, so that any subsequent attempt to set it will make it
local to the current buffer at the time.
+Contrary to @code{make-local-variable} with which it is often confused, this
+cannot be undone, and affects the behavior of the variable in all buffers.
A peculiar wrinkle of this feature is that binding the variable (with
@code{let} or other binding constructs) does not create a buffer-local
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