Re: about submatch in VIM
I have a couple of those books. But I keep going back to my Programming Perl book (camel book). It has a nice and succinct (~10 pages) explanation of regex. It's perlish, but close to many implementations including Boost's. Boost's docs have a nice reference for the re syntax, but it wont teach you what they mean. http://www.boost.org/doc/libs/1_46_1/libs/regex/doc/html/boost_regex/syntax.html -d On 04/01/2011 07:11 PM, Tim Chase wrote: On 04/01/2011 07:01 AM, Coiby wrote: I will appreciate it if you recommend some books on such topic. There are several books[1] and websites[2] regarding regular expressions. Popular books: - Mastering Regular Expressions (published by O'Reilly) - Regular Expression Cookbook (published by O'Reilly) - Regular Expression Pocket Reference (published by O'Reilly) Note that dialects functionalities of regular expression vary from engine-to-engine, so the underlying ideas remain the same, but the implementations may differ superficially. -tim [1] http://www.google.com/search?q=regular+expression+books [2] http://www.regular-expressions.info seems pretty decent as a starting-point -- David Ohlemacher Senior Software Engineer Scientific Solutions Inc. 99 Perimeter Rd Nashua New Hampshire 03063 603-880-3784 . o . . . o o o o -- You received this message from the vim_use maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php
Re: about submatch in VIM
Tim, thanks very much for your detailed reply! I will appreciate it if you recommend some books on such topic. -- View this message in context: http://vim.1045645.n5.nabble.com/about-submatch-in-VIM-tp4273737p4275287.html Sent from the Vim - General mailing list archive at Nabble.com. -- You received this message from the vim_use maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php
Re: about submatch in VIM
On 04/01/2011 07:01 AM, Coiby wrote: I will appreciate it if you recommend some books on such topic. There are several books[1] and websites[2] regarding regular expressions. Popular books: - Mastering Regular Expressions (published by O'Reilly) - Regular Expression Cookbook (published by O'Reilly) - Regular Expression Pocket Reference (published by O'Reilly) Note that dialects functionalities of regular expression vary from engine-to-engine, so the underlying ideas remain the same, but the implementations may differ superficially. -tim [1] http://www.google.com/search?q=regular+expression+books [2] http://www.regular-expressions.info seems pretty decent as a starting-point -- You received this message from the vim_use maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php
Re: about submatch in VIM
Reply to message «about submatch in VIM», sent 21:10:08 01 April 2011, Friday by Coiby: `\=' must be the at the beginning of the replacement string, so you should use `\=\/.(submatch(1)+1)' (`-1' is `decrease', not `increase'). By the way, you could have used `\@=': $s!/\@=[1-9]\+!\=submatch(0)+1!g Original message: Hi, everyone! I want to increase the number in this format /ddd by one but also keep /. But the following command doesn't work: $s/\/\([1-9]\+\)/\/\=submatch(1)-1)/g Can anyone give a tip? Thanks! -- View this message in context: http://vim.1045645.n5.nabble.com/about-submatch-in-VIM-tp4273737p4273737.h tml Sent from the Vim - General mailing list archive at Nabble.com. signature.asc Description: This is a digitally signed message part.
Re: about submatch in VIM
On 03/31/2011 12:10 PM, Coiby wrote: I want to increase the number in this format /ddd by one but also keep /. But the following command doesn't work: $s/\/\([1-9]\+\)/\/\=submatch(1)-1)/g Can anyone give a tip? In addition to what ZyX's comments (particularly about the \= needing to be at the beginning of the replacement), I'd use the \zs to mark the beginning of what I want to replace (which also allows you to tidy up the regexp by not needing \(...\) wrapped around), and use an alternate delimiter to obviate escaping: :%s@/\zs[1-9]\+@\=submatch(0)-1@g A few other things of note: - the lack of 0 is suspicious, so I expect you mean [1-9][0-9]* positive numbers [0-9]\+ non-negative numbers - you say you want increase the number, but you subtract 1 from it (easy fix...just change - to +) - your initial expression has an extra close-paren that doesn't seem to have a matching open-paren. That may have been a mis-key when transcribing. Hope that gives you both a solution and a bit of understanding regarding what it's doing. -tim -- You received this message from the vim_use maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php
