* bug#4115: grep and null device @ 2009-08-11 8:41 ` ts011c8050 2009-08-11 18:40 ` Eli Zaretskii 2009-08-12 17:40 ` bug#4115: marked as done (grep and null device) Emacs bug Tracking System 0 siblings, 2 replies; 6+ messages in thread From: ts011c8050 @ 2009-08-11 8:41 UTC (permalink / raw) To: bug-gnu-emacs Using emacs 23.1.1 on Windows ( also saw it on emacs 22.x and upgraded ) grep is from cygwin "GNU grep 2.5.3" Using rgrep always tags on a null device giving lots of output like grep: NUL: No such file or directory grep: NUL: No such file or directory grep: NUL: No such file or directory grep: NUL: No such file or directory grep: NUL: No such file or directory I've tried customising and turning of grep-use-null-device - as from a quick look at grep.el this is responsible. But no success. Bug recreated using -no-init-file and -no-site-file In GNU Emacs 23.1.1 (i386-mingw-nt5.1.2600) of 2009-07-30 on SOFT-MJASON Windowing system distributor `Microsoft Corp.', version 5.1.2600 configured using `configure --with-gcc (4.4)' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: ENG value of $XMODIFIERS: nil locale-coding-system: cp1252 default-enable-multibyte-characters: t Major mode: Custom Minor modes in effect: tooltip-mode: t tool-bar-mode: t mouse-wheel-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t global-auto-composition-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent input: M-x r e g <backspace> <backspace> g r e p <return> <return> * . a s <return> C-a C-k $ F L A S H / <tab> <return> <backspace> <return> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <right> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <right> L : <backspace> <backspace> : <return> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <menu-bar> <options> <customize> <customize-group> g r e p <return> <help-echo> <down-mouse-1> <mouse-1> <wheel-down> <double-wheel-down> <triple-wheel-down> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <down-mouse-1> <help-echo> <mouse-movement> <drag-mouse-1> <help-echo> <down-mouse-1> <help-echo> <down-mouse-1> <help-echo> <help-echo> <down-mouse-1> <mouse-1> M-x r g r e p <return> <return> <return> <return> <help-echo> <down-mouse-1> <mouse-1> <wheel-down> <double-wheel-down> M-x r g r e p <return> <return> <return> <return> <help-echo> <down-mouse-1> <mouse-1> M-x r e p o r t - e m <tab> <return> Recent messages: Creating group... Creating group members... 91% Creating group magic... Creating group state... Creating group... done Creating customization items ...done Resetting customization items...done Creating customization setup...done To install your edits, invoke [State] and choose the Set operation Grep finished (matches found) [2 times] ^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#4115: grep and null device 2009-08-11 8:41 ` bug#4115: grep and null device ts011c8050 @ 2009-08-11 18:40 ` Eli Zaretskii [not found] ` <000001ca1ab4$f5c738b0$e155aa10$@co.uk> 2009-08-12 17:40 ` bug#4115: marked as done (grep and null device) Emacs bug Tracking System 1 sibling, 1 reply; 6+ messages in thread From: Eli Zaretskii @ 2009-08-11 18:40 UTC (permalink / raw) To: ts011c8050, 4115 > Date: Tue, 11 Aug 2009 09:41:50 +0100 (BST) > From: ts011c8050@blueyonder.co.uk > Cc: > > Using emacs 23.1.1 on Windows ( also saw it on emacs 22.x and upgraded ) > grep is from cygwin "GNU grep 2.5.3" > > > Using rgrep always tags on a null device giving lots of output like > > grep: NUL: No such file or directory Does Cygwin support NUL as the Windows null device? If not, that's your problem. Doesn't `rgrep' also invoke `find'? (It should show the full command it is running in the "*grep*" buffer.) If so, what port of `find' are you using? ^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <000001ca1ab4$f5c738b0$e155aa10$@co.uk>]
* bug#4115: grep and null device [not found] ` <000001ca1ab4$f5c738b0$e155aa10$@co.uk> @ 2009-08-11 20:34 ` Eli Zaretskii 2009-08-11 22:47 ` Jason Rumney [not found] ` <000c01ca1acf$29cca3b0$7d65eb10$@co.uk> 0 siblings, 2 replies; 6+ messages in thread From: Eli Zaretskii @ 2009-08-11 20:34 UTC (permalink / raw) To: shippeys; +Cc: 4115 > From: "shippeys" <theshippeys@blueyonder.co.uk> > Date: Tue, 11 Aug 2009 19:53:05 +0100 Please use Reply-All, to let the bug-tracker archive all the discussion. > > > grep: NUL: No such file or directory > > > > Does Cygwin support NUL as the Windows null device? If not, that's > > your problem. > > > > Yes - Would it be the grep.el code that gets confused and picks NUL? You are using a native Windows port of Emacs. NUL is the standard name of the null device on that system. Why do you think it gets confused? > AIUI the null device is only there to make sure the grep call doesn't hang > if you forget to pass it files to search. It seems a lot of pain for a > marginal benefit! I don't know yet why null device is there. Seeing the command line would help. ^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#4115: grep and null device 2009-08-11 20:34 ` Eli Zaretskii @ 2009-08-11 22:47 ` Jason Rumney [not found] ` <000c01ca1acf$29cca3b0$7d65eb10$@co.uk> 1 sibling, 0 replies; 6+ messages in thread From: Jason Rumney @ 2009-08-11 22:47 UTC (permalink / raw) To: Eli Zaretskii, 4115; +Cc: shippeys Eli Zaretskii wrote: >> AIUI the null device is only there to make sure the grep call doesn't hang >> if you forget to pass it files to search. It seems a lot of pain for a >> marginal benefit! >> > > I don't know yet why null device is there. Seeing the command line > would help. > It is there to force grep to print filenames in its output, even if only a single filename is given on the command line. ^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <000c01ca1acf$29cca3b0$7d65eb10$@co.uk>]
* bug#4115: grep and null device [not found] ` <000c01ca1acf$29cca3b0$7d65eb10$@co.uk> @ 2009-08-12 3:10 ` Eli Zaretskii 0 siblings, 0 replies; 6+ messages in thread From: Eli Zaretskii @ 2009-08-12 3:10 UTC (permalink / raw) To: Tom Shippey; +Cc: 4115 > From: "Tom Shippey" <tomshippey@blueyonder.co.uk> > Date: Tue, 11 Aug 2009 23:00:38 +0100 > > find . \( -path \*/SCCS -o -path \*/RCS -o -path \*/CVS -o -path \*/MCVS -o > -path \*/.svn -o -path \*/.git -o -path \*/.hg -o -path \*/.bzr -o -path > \*/_MTN -o -path \*/_darcs -o -path \*/\{arch\} \) -prune -o -type f \( > -iname \*.c \) -exec grep -i -n junk {} NUL \; > ./x.c:1:junk > ./x.c:3:junk > grep: NUL: No such file or directory > grep: NUL: No such file or directory Does it help to set null-device to "/dev/null"? ^ permalink raw reply [flat|nested] 6+ messages in thread
* bug#4115: marked as done (grep and null device) 2009-08-11 8:41 ` bug#4115: grep and null device ts011c8050 2009-08-11 18:40 ` Eli Zaretskii @ 2009-08-12 17:40 ` Emacs bug Tracking System 1 sibling, 0 replies; 6+ messages in thread From: Emacs bug Tracking System @ 2009-08-12 17:40 UTC (permalink / raw) To: Eli Zaretskii [-- Attachment #1: Type: text/plain, Size: 832 bytes --] Your message dated Wed, 12 Aug 2009 20:32:38 +0300 with message-id <83my65j5u1.fsf@gnu.org> and subject line Re: bug#4115: grep and null device has caused the Emacs bug report #4115, regarding grep and null device to be marked as done. This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact owner@emacsbugs.donarmstrong.com immediately.) -- 4115: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=4115 Emacs Bug Tracking System Contact owner@emacsbugs.donarmstrong.com with problems [-- Attachment #2: Type: message/rfc822, Size: 5507 bytes --] From: ts011c8050@blueyonder.co.uk To: bug-gnu-emacs@gnu.org Subject: grep and null device Date: Tue, 11 Aug 2009 09:41:50 +0100 (BST) Message-ID: <3988.84.19.238.174.1249980110.UEIUQ2lbQEh6Qw==.squirrel@84.19.238.174> Using emacs 23.1.1 on Windows ( also saw it on emacs 22.x and upgraded ) grep is from cygwin "GNU grep 2.5.3" Using rgrep always tags on a null device giving lots of output like grep: NUL: No such file or directory grep: NUL: No such file or directory grep: NUL: No such file or directory grep: NUL: No such file or directory grep: NUL: No such file or directory I've tried customising and turning of grep-use-null-device - as from a quick look at grep.el this is responsible. But no success. Bug recreated using -no-init-file and -no-site-file In GNU Emacs 23.1.1 (i386-mingw-nt5.1.2600) of 2009-07-30 on SOFT-MJASON Windowing system distributor `Microsoft Corp.', version 5.1.2600 configured using `configure --with-gcc (4.4)' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: ENG value of $XMODIFIERS: nil locale-coding-system: cp1252 default-enable-multibyte-characters: t Major mode: Custom Minor modes in effect: tooltip-mode: t tool-bar-mode: t mouse-wheel-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t global-auto-composition-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent input: M-x r e g <backspace> <backspace> g r e p <return> <return> * . a s <return> C-a C-k $ F L A S H / <tab> <return> <backspace> <return> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <left> <right> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <right> L : <backspace> <backspace> : <return> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <menu-bar> <options> <customize> <customize-group> g r e p <return> <help-echo> <down-mouse-1> <mouse-1> <wheel-down> <double-wheel-down> <triple-wheel-down> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <help-echo> <down-mouse-1> <help-echo> <mouse-movement> <drag-mouse-1> <help-echo> <down-mouse-1> <help-echo> <down-mouse-1> <help-echo> <help-echo> <down-mouse-1> <mouse-1> M-x r g r e p <return> <return> <return> <return> <help-echo> <down-mouse-1> <mouse-1> <wheel-down> <double-wheel-down> M-x r g r e p <return> <return> <return> <return> <help-echo> <down-mouse-1> <mouse-1> M-x r e p o r t - e m <tab> <return> Recent messages: Creating group... Creating group members... 91% Creating group magic... Creating group state... Creating group... done Creating customization items ...done Resetting customization items...done Creating customization setup...done To install your edits, invoke [State] and choose the Set operation Grep finished (matches found) [2 times] [-- Attachment #3: Type: message/rfc822, Size: 2510 bytes --] From: Eli Zaretskii <eliz@gnu.org> To: Tom Shippey <tomshippey@blueyonder.co.uk> Cc: 4115-done@emacsbugs.donarmstrong.com Subject: Re: bug#4115: grep and null device Date: Wed, 12 Aug 2009 20:32:38 +0300 Message-ID: <83my65j5u1.fsf@gnu.org> > From: "Tom Shippey" <tomshippey@blueyonder.co.uk> > Date: Wed, 12 Aug 2009 08:50:57 +0100 > > > > find . \( -path \*/SCCS -o -path \*/RCS -o -path \*/CVS -o -path > > \*/MCVS -o > > > -path \*/.svn -o -path \*/.git -o -path \*/.hg -o -path \*/.bzr -o - > > path > > > \*/_MTN -o -path \*/_darcs -o -path \*/\{arch\} \) -prune -o -type f > > \( > > > -iname \*.c \) -exec grep -i -n junk {} NUL \; > > > ./x.c:1:junk > > > ./x.c:3:junk > > > grep: NUL: No such file or directory > > > grep: NUL: No such file or directory > > > > Does it help to set null-device to "/dev/null"? > > Yep - that works fine. Many thanks. Thanks. I'm closing the bug, because its reason is mixing a native Windows build of Emacs with Cygwin shell that apparently does not support NUL as the null device. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-08-12 17:40 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- [not found] <83my65j5u1.fsf@gnu.org> 2009-08-11 8:41 ` bug#4115: grep and null device ts011c8050 2009-08-11 18:40 ` Eli Zaretskii [not found] ` <000001ca1ab4$f5c738b0$e155aa10$@co.uk> 2009-08-11 20:34 ` Eli Zaretskii 2009-08-11 22:47 ` Jason Rumney [not found] ` <000c01ca1acf$29cca3b0$7d65eb10$@co.uk> 2009-08-12 3:10 ` Eli Zaretskii 2009-08-12 17:40 ` bug#4115: marked as done (grep and null device) Emacs bug Tracking System
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