pnotepad.org forums » Tag: regex

pnotepad.org forums » Tag: regex - Recent Topics http://pnotepad.org/forums/tags/regex Programmer's Notepad Forums en-US Thu, 09 Feb 2012 11:48:54 +0000 http://bbpress.org/?v=1.0.3 <![CDATA[Search]]> q http://pnotepad.org/forums/search.php RegEx in PN - Example (NickDMax) http://pnotepad.org/forums/topic/7416#post-10559 Wed, 11 Jan 2012 02:51:44 +0000 NickDMax 10559@http://pnotepad.org/forums/ So I was thinking about this <a href="http://untidy.net/blog/2011/05/18/regular-expressions-and-scripts-worked-example/">RegEx/Script example from the Untidy blog</a> and I thought: "Can that be one in 1 RegEx?" The answer is of course: Yes - but would you really want to. Search: ^(?:(?!LogStep).*(?:\r\n)+)|(?:LogStep$\s*"([^"]+)"\s*$.*(\r\n)(\r\n)*) Replace: \1\2 hit <Replace All> This is a pretty complex RegEx so lets break it up. The overall structure is A|B A: RegEx to match the rest of a line NOT BEGINNING with "LogStep" B: RegEx to match the rest of a line that DOES begin with "LogStep" - capture the text (and a CRLF new line) The whole thing is wrapped in a the expression: ^(?:A|B) where ^ asserts the beginning of a line, and (?: ) is a non-capture group - that is it treated as a group but not captured into \1 or \2 etc. - this outer non-capture group creates separation. Without it our expression would need to be: ^A|^B Since the expression A contains no capture groups BUT the overall expression DOES contain capture 2 capture groups \1 and \2 will be empty when expression A matches. When B matches \1 is the text inside of the quotation marks, and \2 is a crlf (\r\n) pair. RegEx Questions (NickDMax) http://pnotepad.org/forums/topic/702#post-2540 Fri, 30 Oct 2009 17:13:32 +0000 NickDMax 2540@http://pnotepad.org/forums/ I was trying to update some of the wiki on Regular Expressions and found some oddities -- Though first a question: #1. What is the base for PN's Find/Replace RegEx? Boost::XPressive? Boost::Regex? Now The RegEx seems to support Look ahead/behind well enough: '(.*)(?=ton)' -- seems to work. '(?<=Apple)(.*)' -- seems to work. but the (?!...) and (?<!...) non-capture groups really seem to be buggy. They Work in some situations but seem to fall apart when combined with greedy quantifiers. '(?<!H)(.*)' will still match 'Hello' and '(?<!H)([elo]*)' does not seem to match anything. (For example Bello Xello etc). '(.)(?!e)' works fine '(.*)(?!e)' Matches every line... (sort of makes sense since this regex matches to end of line charaters...but even things like '(.*)(?!e$)' fail. So I am looking for information on the RegEx library used so that I can get a feel for what should be updated in the Wiki. Replace w/ Regular Expressions: Unexpected Behaviour (fedoracore) http://pnotepad.org/forums/topic/651#post-2360 Sun, 23 Aug 2009 11:19:04 +0000 fedoracore 2360@http://pnotepad.org/forums/ Hi. As somewhat a follower of ProsNpad & its RegEx Find and Replace functionality, I noticed in recent changelog reports that the RegEx has been updated. I thought it might be of help to report my experience while using Replace with regular expressions attempting to dissect some of what's going on in the YUI(1) JavaScript library component, yahoo-dom-event.js Most of the time, everything works great (e.g. i often turn to ProsNpad for regular expression operations. for curiosity, i've done some amount of testing for differences between PN, other Scintilla-based editors, .NET-based editors, etc.), and I've been successful with it in some instances where i experienced difficulty with other editors (i.e. it's amazing the variance between different "flavors", as implemented in editors [to quote the Regex Buddy author's texts]) One of the several expressions I've used, is shown below-- it's one of a few which caused the unexpected result: Match Expression: <code>(return[ \S]+;)(})(?=\S)</code> Replace Expression: <code>\n\1\n\2\n\3</code> The unexpected result follows: Before: <pre><code>if(this.__yui_events){ if(this.__yui_events[A]){ return true;}} return false;}};(function(){</code></pre> After: <pre><code>if(this.__yui_events){ if(this.__yui_events[A]){ return true; } \\} return false;}};(function(){</code></pre> Programmer's Notepad had previously executed a Replacement Expression successfully on 650+ items in that same file, just as i wanted without error. However, when I first opened the file, i was seeing this error. I enabled (tested), then disabled the "Allow Backslash Expression" option at that time, which seemed to "fix" the error, but that old-trick didn't work this time. ;-) Looking through the code, it must have "went away" for the bulk of my work, i think until trying this particular expression which, btw-- i realized, even if successful, wasn't quite what i was going for-- but, you know-- win some lose some, eh? (a lot of fooling around w/ regex, really-- guess i enjoy wasting time... i dunno) heheh... anyway-- I suspect, if i exit the app, and restart it-- i'll probably have more success-- so, this isn't a complaint, but just an FYI. best regards! -js EDIT: geez... i hope i edited that code correctly, to reflect what's going on. note the double-reverse-solidus character which appeared (the unexpected result) in the "After" shot. NOTE: -- here, it doesn't appear as PNpad has removed any chars, which was the plan, however-- as i mentioned, when i first started, and i saw these reverse-solidus chars, it was removing, for example, instead of returning \1, it removed it, and went on w/ the rest of the expression. damn-- too bad it's so difficult to try to explain in a few short sentences, and many long sentences doesn't help much, i guess. oh well! 'least i've tried, eh? :-) (1) sourceforge . net / projects / yui / Search and Replace questions (ToddFiske) http://pnotepad.org/forums/topic/544#post-1880 Fri, 27 Feb 2009 17:03:32 +0000 ToddFiske 1880@http://pnotepad.org/forums/ I was using search and replace with regular expressions on some code yesterday and came up with some questions. 1. The Mark All button highlights all occurrences of the search term to be hightlighted, but this highlighting is barely visible on a dark background theme. Is there a way to change the highlighting color? 2. Is there a way to unmark all marked items? (As a workaround, I can search for and mark a different sequence.) 3. When replacing all, is there a way to make it stop at the end of the document, not continue from the top? Then I have a feature request related to this: If one just did a Replace, I would like F3 to repeat the replace, instead of just repeating the find. Or have a command and keypress that repeats the replace operation. For example, in the Borland Delphi 7 IDE one can start a replace operation and replace one or more occurrences, then close the dialog, move the cursor around, type, etc, then press Ctrl+L to do another replace operation without going back to the dialog. If the last thing was a find operation, then Ctrl+L repeats that instead. I will also try to add this request in Google Code. Java Extension (oh) http://pnotepad.org/forums/topic/487#post-1716 Tue, 18 Nov 2008 10:33:41 +0000 oh 1716@http://pnotepad.org/forums/ Dear PN Team - Thank you for a wonderful tool. Are there any plans for a Java extension to Programmers Notepad, like PyPN? For the moment I use Project Tools and Global Tools to integrate my Java programs into Programmers Notepad (I send the selected text to Java using Standard Input, and I capture the output, replacing the original selection). But this method results in frequent crashes of PN. I am not very good with Python, and know nothing about C (or what language PN is programmed in). A java extension would mean a way for me to contribute useful scripts (spell checking, regex search & replace in folders, replacement expressions etc.). Thanks again for the tool. Cannot run installer - not administrator (aland) http://pnotepad.org/forums/topic/480#post-1695 Wed, 05 Nov 2008 15:27:00 +0000 aland 1695@http://pnotepad.org/forums/ Hello, I already have pn v2.0.6.1 installed on my machine, but since installing it my account has had administrator rights removed (what a pain!). I'd like to upgrade to latest version, but if I run just the installer I get the message "You must be logged in as an administrator when installing this program". Is there a way that I can upgrade to the latest version without the installer? The main reason I want to upgrade is because, with this version it doesn't seem possible to use the 'lazy' modifier for regex. eg - <code><.+?></code> to match HTML/XML tags. I just get 'The specified text cannot be found'. Thanks in advance, it's a great program! How do I use the new regex? (2.0.9) (jumpfroggy) http://pnotepad.org/forums/topic/439#post-1544 Tue, 15 Jul 2008 21:22:49 +0000 jumpfroggy 1544@http://pnotepad.org/forums/ I just installed 2.0.9.806, and tried to search for <code>$.+$</code>, which in the old PN would search for an entire line. Now <code>\(</code> searches for a parenthesis instead of grouping the match. However, when I change it to <code>(.+)</code> it highlights from the cursor to the end of the file, and then the second search highlights the entire file. Same thing happens with <code>^.+$</code>. Maybe the problem is with the multi-line flag not being set for the regex? Is there any documentation for the regex used in PN? I'd be glad to help make the wiki page, if the wiki would let me into my account (see my other thread). Thanks. help on regular expressions (webmailusr-msn) http://pnotepad.org/forums/topic/431#post-1520 Fri, 04 Jul 2008 01:41:12 +0000 webmailusr-msn 1520@http://pnotepad.org/forums/ Hi: I need to customize some regex for output capture, I'd like to ask your help: PHP: Parse error: syntax error, unexpected T_STRING in Test.php on line 11 (No idea) GCC: Test.cpp:21: syntax error before `(' token %f:%l:(%c:)?.* works for that but not when column is included: Test.cpp:7:17: Mat.h: No such file or directory How to replace delete whole line containing specific characters? (horus) http://pnotepad.org/forums/topic/403#post-1414 Thu, 29 May 2008 19:56:53 +0000 horus 1414@http://pnotepad.org/forums/ Suppose I want to delete all those whole lines containing the characters "abc". By whole line, I mean even the newline character. If I use the regex ^.*abc.*$ and replace it with nothing, empty lines will be left. But I don't even want empty lines. What should I do? Find/Replace and Regular / Allow backslash expressions (Nux) http://pnotepad.org/forums/topic/419#post-1471 Tue, 10 Jun 2008 10:18:09 +0000 Nux 1471@http://pnotepad.org/forums/ Hi. In Find/Replace window there are two options - Regular expressions and Allow backslash expressions but it seems to me that when I tick "Regular expressions" the "Allow backslash expressions" doesn't change anything. "Match whole word" and "Match case" also doesn't seem to work with RegExp. So this seems to be a bug or maybe the options should be organized differently e.g.: <code> * Simple search expressions [] Match case [] Match whole word [] Allow backslash expressions * Regular expressions </code> BTW I've entered a wish for Find/Replace about PCRE parentheses matching (tagged expressions): <a href="http://code.google.com/p/pnotepad/issues/detail?id=87" rel="nofollow">http://code.google.com/p/pnotepad/issues/detail?id=87</a> That would be an option in Regexp: <code> * Simple search expressions [] Match case [] Match whole word [] Allow backslash expressions * Regular expressions [] PCRE tagged expressions </code> Having said all that I believe at least "Match case" should also be available for RegExp. regex: is there support for {number} queries? (jumpfroggy) http://pnotepad.org/forums/topic/320#post-1151 Wed, 16 Jan 2008 20:38:56 +0000 jumpfroggy 1151@http://pnotepad.org/forums/ I'm trying to do a search for this: a{2} In most regex's, that should find any two occurrences of the character "a". It doesn't seem to work in PN. Is there support for curly braces in Regular Expressions in PN? Thanks! Regular expression and Backslash expressions should be mutually exclusive (jumpfroggy) http://pnotepad.org/forums/topic/319#post-1150 Wed, 16 Jan 2008 20:16:22 +0000 jumpfroggy 1150@http://pnotepad.org/forums/ I just made a bug for this here: <a href="http://sourceforge.net/tracker/index.php?func=detail&aid=1873180&group_id=45545&atid=443219" rel="nofollow">http://sourceforge.net/tracker/index.php?func=detail&aid=1873180&group_id=45545&atid=443219</a> "Regular and Backslash expressions should be mutually exclusive. In the Search dialog, there are two checkboxes: "Regular expression" "Allow backslash expressions" These are two conflicting options, so the checkboxes should be mutually exclusive. It looks like right now the Regular expression takes precedence if they are both checked, but you really shouldn't be able to check both unless you can actually use both. I propose that if you check one of these checkboxes, the other is automatically unchecked. This would solve confusion, and more accurately reflect how they really operate." Regex: newline? (iRob) http://pnotepad.org/forums/topic/77#post-283 Fri, 07 Jul 2006 15:33:52 +0000 iRob 283@http://pnotepad.org/forums/ Is there a regex syntax for newline or carriage return? I can't find one in the help or in the scintilla sourceforge pages. Thanks! Perl compatible regular expressions (mp) http://pnotepad.org/forums/topic/166#post-601 Fri, 09 Feb 2007 21:26:42 +0000 mp 601@http://pnotepad.org/forums/ First of all I'd like to say that I use Programmers Notepad every single day, it has all the features I need when coding PHP/Perl/Tcl with the exception of one. So I'm just wondering if PCRE (perl compatible regular expressions) is planned for future releases? using find-replace (Kyote) http://pnotepad.org/forums/topic/71#post-264 Sun, 18 Jun 2006 02:48:50 +0000 Kyote 264@http://pnotepad.org/forums/ How do I search for consecutive new lines? used to I could could do \n\n to find blank lines in a text file and then replace with \n but now it gives me a warnign saying specified text not found. Regular Expression search (philcart) http://pnotepad.org/forums/topic/37#post-144 Tue, 14 Mar 2006 00:49:26 +0000 philcart 144@http://pnotepad.org/forums/ Just trying to work out how the Regular Expression search works. I'm trying to find specific lines in a text file that do not contain at least 22 pipe characters. The expression I entered is ~^*\|{22} This doesn't find any rows but I definately know that invalid rows exist. I found one manually by scanning through the file. Is my expression incorrect, or is there a problem with the regex find? Thanks Phill How to setup output parser for NAnt C# (etasoft) http://pnotepad.org/forums/topic/7#post-19 Wed, 18 Jan 2006 14:35:49 +0000 etasoft 19@http://pnotepad.org/forums/ I am trying to setup error parser pattern without any luck for NAnt running C# compiler. Build-in parser used to work with older version of NAnt but after I upgraded NAnt, its output slightly changed and there I am. I have tried this [csc] %f(%l,%c): Actual output from NAnt is: [csc] d:\xtrans\src\etasoft\Connector.cs(132,23): error CS1519: Invalid token ';' in class, struct, or interface member declaration