* Re: What's the doc of replace-regexp-in-string saying ? [not found] ` <slrniejrsu.1a7.sidneylambe@3f8s2dcr5.net> @ 2010-11-22 10:53 ` Pascal J. Bourguignon 2010-11-23 16:33 ` Stefan Monnier 0 siblings, 1 reply; 5+ messages in thread From: Pascal J. Bourguignon @ 2010-11-22 10:53 UTC (permalink / raw) To: help-gnu-emacs Sidney Lambe <sidneylambe@somewhere.invalid> writes: > On comp.unix.shell, Pascal J. Bourguignon <pjb@informatimago.com> > wrote: > >> Sidney Lambe <sidneylambe@somewhere.invalid> writes: >> >>> On comp.unix.shell, bolega <gnuist006@gmail.com> wrote: >>> >>>> Hello All, >>> >>> >>> comp.lang.lisp >> >> Better news:comp.emacs.help >> > > Ah yes. I am vi (vanilla vi, not vim or elvis...) man myself, and had forgotten that emacs > used lisp. > > I actually have never even tried emacs. Every description I've > read really turns me off. > > It's really a textmode integrated desktop environment > these days, isn't it? No, it's a TEXT editor, but you are forbidden to type any character, or read any character. It only displays 3D animated little animals in a 3D wonderworld, and you 'edit' your program by pushing those little 3D animals around and enticing them doing things more or less palatable. -- __Pascal Bourguignon__ http://www.informatimago.com/ A bad day in () is better than a good day in {}. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: What's the doc of replace-regexp-in-string saying ? 2010-11-22 10:53 ` What's the doc of replace-regexp-in-string saying ? Pascal J. Bourguignon @ 2010-11-23 16:33 ` Stefan Monnier 2010-11-23 17:19 ` Pascal J. Bourguignon 0 siblings, 1 reply; 5+ messages in thread From: Stefan Monnier @ 2010-11-23 16:33 UTC (permalink / raw) To: help-gnu-emacs > No, it's a TEXT editor I beg to differ: Emacs has never been able to edit any text for me: I've always had to do the editing myself. Stefan "still hoping" ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: What's the doc of replace-regexp-in-string saying ? 2010-11-23 16:33 ` Stefan Monnier @ 2010-11-23 17:19 ` Pascal J. Bourguignon 0 siblings, 0 replies; 5+ messages in thread From: Pascal J. Bourguignon @ 2010-11-23 17:19 UTC (permalink / raw) To: help-gnu-emacs Stefan Monnier <monnier@iro.umontreal.ca> writes: >> No, it's a TEXT editor > > I beg to differ: Emacs has never been able to edit any text for me: > I've always had to do the editing myself. It's all your fault. What are you waiting to write in emacs lisp the AI to do the editing for you? -- __Pascal Bourguignon__ http://www.informatimago.com/ A bad day in () is better than a good day in {}. ^ permalink raw reply [flat|nested] 5+ messages in thread
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* Re: [2nd attempt] What's the doc of replace-regexp-in-string saying ? [not found] ` <5a2270e2-889f-4d22-ba15-951a4c170671@o2g2000vbh.googlegroups.com> @ 2010-11-22 16:27 ` Tassilo Horn [not found] ` <slrniel543.gia.bill@lat.localnet> 1 sibling, 0 replies; 5+ messages in thread From: Tassilo Horn @ 2010-11-22 16:27 UTC (permalink / raw) To: help-gnu-emacs bolega <gnuist006@gmail.com> writes: >> In this doc, its not clear what the role of \' is ? It does basically that what the docs say: it tells the function to replace only the first or the last match. ,----[ (info "(elisp)Regexp Backslash") ] | `\`' | matches the empty string, but only at the beginning of the buffer | or string being matched against. | | `\'' | matches the empty string, but only at the end of the buffer or | string being matched against. `---- Here are some examples. --8<---------------cut here---------------start------------->8--- ;; Replace all matches (replace-regexp-in-string "\\(foo\\)" "bar" "foo foo") ==> "bar bar" ;; Replace only the match at the end of the string (replace-regexp-in-string "\\(foo\\)\\'" "bar" "foo foo") ==> "foo bar" ;; Replace only the match at the beginning of the string (replace-regexp-in-string "\\`\\(foo\\)" "bar" "foo foo") ==> "bar foo" --8<---------------cut here---------------end--------------->8--- BTW: A great tool to experiment with functions is the interactive elisp shell (M-x ielm RET). Bye, Tassilo ^ permalink raw reply [flat|nested] 5+ messages in thread
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* Re: [2nd attempt] What's the doc of replace-regexp-in-string saying ? [not found] ` <slrniel543.gia.bill@lat.localnet> @ 2010-11-22 18:32 ` Orivej Desh 0 siblings, 0 replies; 5+ messages in thread From: Orivej Desh @ 2010-11-22 18:32 UTC (permalink / raw) To: help-gnu-emacs Bill Marcum <bill@lat.localnet> writes: > On 2010-11-22, bolega <gnuist006@gmail.com> wrote: >> >> On Nov 21, 3:27 pm, bolega <gnuist...@gmail.com> wrote: >>> Hello All, >>> >>> In this doc, its not clear what the role of \' is ? >>> >>> >>> To replace only the first match (if any), make REGEXP match up to \' >>> and replace a sub-expression, e.g. >>> (replace-regexp-in-string "\(foo\).*\'" "bar" " foo foo" nil nil 1) >>> => " bar foo" >> > This is off topic for comp.unix.shell, but it seems clear to me. If the > regexp didn't end with \', it would change " foo foo" to " bar bar". Since matching is hungry, this is not the case: (replace-regexp-in-string "\\(foo\\).*\\'" "bar" " foo foo" nil nil 1) " bar foo" (replace-regexp-in-string "\\(foo\\).*" "bar" " foo foo" nil nil 1) " bar foo" Moreover, I'm sure bolega has spotted an error in documentation. Consider this: (replace-regexp-in-string "\\(foo\\).*\\'" "bar" "foo foo\n foo foo" nil nil 1) "foo foo bar foo" Documentation string assumed that `.' would match a newline. \' matches an end of a string, unlike $ which matches both an end of a string and an end of a line). Without \' or with $ the last regexp matches twice: (replace-regexp-in-string "\\(foo\\).*" "bar" "foo foo\n foo foo" nil nil 1) "bar foo bar foo" (replace-regexp-in-string "\\(foo\\).*$" "bar" "foo foo\n foo foo" nil nil 1) "bar foo bar foo" ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2010-11-23 17:19 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- [not found] <09bb11dd-b588-4b5c-8f8c-b31e2590599c@v23g2000vbi.googlegroups.com> [not found] ` <slrniejnhj.1a7.sidneylambe@3f8s2dcr5.net> [not found] ` <874oba2egv.fsf@kuiper.lan.informatimago.com> [not found] ` <slrniejrsu.1a7.sidneylambe@3f8s2dcr5.net> 2010-11-22 10:53 ` What's the doc of replace-regexp-in-string saying ? Pascal J. Bourguignon 2010-11-23 16:33 ` Stefan Monnier 2010-11-23 17:19 ` Pascal J. Bourguignon [not found] ` <5a2270e2-889f-4d22-ba15-951a4c170671@o2g2000vbh.googlegroups.com> 2010-11-22 16:27 ` [2nd attempt] " Tassilo Horn [not found] ` <slrniel543.gia.bill@lat.localnet> 2010-11-22 18:32 ` Orivej Desh
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