Regex match second occurrence

Eligibility:

Regex match second occurrence. Note: The pattern will match everything up to the first Apr 13, 2010 · Yes. I'm trying to construct a regex to match a part of a string, starting from a certain string, and until the last occurrence of a string, unless that string doesn't exist - in which case the rest of the string should match. replace first and last occurrence of a character. 236 I'd like to use a regex pattern to do a replace in an editor like Notepad++, I came up with this regex to match my expression: 2. a-double-hyphen. Find The Second Occurrence Of A Substring Using find () method. This will match the email addresses in the body of text. Jul 25, 2010 · The regex I have above will catch things like: foo (baz this bar) (foo this) But not (it will only match twice, once for each set of delimiters): foo (this this bar) baz (this this this) Try using a simple single-pass scanner instead of a regex. Ex: return everything after 2nd occurence of is "This is a string of example. Feb 3, 2019 · The first occurrence of the id numbers is: 87116473 <-- first one in the first line 896834 <-- first one in the second line The second occurrence of id numbers: 87116474 <-- second one in the first line 814835 <-- second one in the second line and so on As you see, the second line has more one more id number than the first. In other words, I want to only keep what is before the second - and the file extension of . Yours matches everything following EVERY slash, which really isn't the solution sought. Mar 20, 2023 · This is an interesting problem from the standpoint of the use of a regular expression to obtain the desired match, even though it may be preferred to convert the JSON string to a hash and go from there. Take this regular expression: /^[^abc]/. The first few lines of input (contained in @intersect) are: 'gi|112807938|emb|CU075707. However, I only want to match a single occurrence of the hyphen, no more or less. Also, we can get each match’s start index using Matcher. I would just like to extract everything after the second to last dash. <140>Sep 31 24:39:48 pizza: would 5-External 0-Trusted 70 TXT 20 311 10. The target can be verbally expressed as "the May 30, 2013 · I would like to capture the text that occurs after the second slash and before the third slash in a string. The first point where the rest of your regex can match is the last occurrence of your sequence, seen from the end of the string. Regular expression tester with syntax highlighting, PHP / PCRE & JS Support, contextual help, cheat sheet, reference, and searchable community patterns. / (\-[\d]+)*(\-) / g. Matches any dot that has zero or more characters other than linebreaks and equal signs, as few as possible, at the start of string before the dots. Thanks May 2, 2019 · Regex - match everything after the second to last dash. The regex I used is ([0-9]+){2}. Removing three words from a 6 word sentence will leave 3 words, not the last two. Expected output. " Notepad++ 1 Arkansas; Hawaii; South Dakota; North Carolina 2 Califo So you can directly replace that with an empty string, and you are left with your desired text. I have a string like below: single-hyphen. Mar 5, 2010 · 0. can anybody help on how to select the second 3 digit number, 161 Feb 17, 2020 · But in your description you stated: upto the second to last white space character, that's diferent. NextMatch method. ^([^-]*?)\s*-\s*. If you add a * after it – /^[^abc]*/ – the regular expression will continue to add each subsequent character to the result, until it meets either an a, or b, or c. Feb 4, 2014 · 6. */(. A regular expression that matches the last occurrence of characters in a string. + Quantifier. You can retrieve subsequent matches by repeatedly calling the returned Match object's Match. 999. Solution 2: To get the 2nd occurrence, just grab whatver is in group 1: Click for Demo. Sep 18, 2021 · I want to capture the second occurrence using REGEX pattern in notepad++ which is "Florida; West Virginia; DC only. You can also retrieve all matches in a single method call by calling the Regex. (?<=^[^\r\n=]*?)\. sub function on first argument giving regex to match everything apart from 2nd dot(in 3 capturing groups) and replacing them as per need with respective capturing groups placing _ on place of 2nd dot. Should be Tab 3-3. After the process of the pattern matching, you will have to use the _sre. Given the string: <div>£2056</div> You will arrive at the text you wanted using: \d+. In re. 3 Regex: Matching exactly one occurrence. Multiple occurrence in regex. Using split () and List Slicing. Replace everything – after this – character. NSTR; TEST; NSTR GKOH; NSTR; NSTR; JLAH GKOH; JLAH; NSTR; CZE; NSTR; FKILL Should match the second NSTR in each case. So, we need to work backwards, and, to see the effects of the regex, I'll capture each section and print it separated with |==|. In this case you could find the name inside the group 1. Perl uses the same mechanism to produce $1, $2, etc, so you also pay a price for each pattern that contains capturing parentheses. 2 May 12, 2012 · I would like to split the string at the first ' - ' to find 'city' (just a sample word, it can be other words as well). Sep 11, 2016 · Search mode : Regular expression (with the . When started, sed will. IgnoreCase); String result = re. split(str1, n + 1) Output: One more way to find the second occurrence of a substring is use the re module in Python. [^,]*, is text that does not include a comma, followed by a comma. This will match any single character at the beginning of a string, except a, b, or c. The behavior of m//g in scalar context is given in the "Regexp Quote-like Operators" section of perlop (1), and in the "Pattern Matching Operators" section of Chapter 2 of Programming Perl; zero-width positive lookahead assertions are shown in the "Regular Expressions" section of perlre (1), and in the "rules of regular expression matching to capture a match between start and the first occurrence of end. Mar 2, 2017 · If you only want the first occurrence then don't use global flag it only match the first occurrence . Fifth with matchdate and other. Apr 13, 2012 · How can I modify the above javascript regex to match only the first occurance of each word (I believe this is called non-greedy)? Jan 6, 2010 · To cite the perlre manpage: You can specify a character class, by enclosing a list of characters in [] , which will match any character from the list. Since it's not like that last one would need to be replaced. Aug 14, 2018 · I would like to match the characters between two occurrences of #'s. Explanation: . Thanks. Jul 1, 2014 · Regex match sequence more than once. abc def ghi = jkl. * - matches 0+ occurrences of any character except a newline, as many as possible. since we have eaten all the way to the end of the line, the regex will now back track till it finds the first match. stuff you're. Q. For the first line, my capture target is "def". * goes right to the end of the line/string, without any amount of consideration. 199. Oct 11, 2013 · After matching all the way to the end of the line, it will then parse the next pattern "val". Regular expression to match first and last character. find () allows us to find the next matched occurrence in the input string. 9. I can get the regex to successfully match a number, but I can't get it to match a specific number in the sequence. Adding /g isn't enough if you wish to match multiple occurrences of a substring. I can write an expression that only puts the second occurrence into a capture group:. occurences of a pair of words 0 How to extract a portion between the first and second occurrence of a character using regular expressions in R? Nov 13, 2019 · I need a regex expression that ONLY matches the second occurrence of a given string within a longer string. Otherwise you can put the global flag 'g'. I am trying to first understand how to get the first occurrence and then next would like to find each match and replace. I'm using regex in Open Office - so I need to return a direct match rather than a javascript array. +o)"; Regex re = new Regex(pattern, RegexOptions. You can see 12 (13-1) repetitions of non-capturing group Apr 29, 2021 · I'm trying to write a REGEX to get everything after the last occurrence of 'ABC': Example: I was trying the expression below, but it considers ABC as separatelly letters, so it would match wrong if there was a single 'A' after 'ABC' in the text: PS: I'm trying an expression which does not make groups and i'm using python3. 3. Here are three examples: Tab 3-3-z-o. I can match INCLUDING the final like this: Sep 16, 2011 · Exclude everything after the second occurrence of a certain string. Desired output: Stack@overflow:Stack. split() method (to complicate things, it requires a regular expression). *$ is everything else in the line. ( [\d]+)* * matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy) A repeated capturing group will only capture the last iteration. I have a line from a text file that I want to only match the first occurrence of a number and ignore the second. Search: ^. ReplaceAllString(content, `${1}stringofmychoice`) But now I need to match and replace only after a certain occurrence. whereby file. You regex matches two or more consecutive digits regardless of where they some in the string. RegEx match certain string until next occurence of this string. (( Constr1 )+) 3rd Capturing Group. Just a quick sample in Powershell: Match only the nth occurrence using a regular expression. Feb 27, 2019 · MYSTRING=*. *?(NSTR) Apr 12, 2018 · If you want to replace the title, even more important than what the entire regex matches is what the second capture group is matching. Option 2. the second column is the end value. group method to get the belonging value of the _sre. Matches the end of the string, or the end of a line if the multiline flag () is enabled. Hi all, I am trying to match everything after the second to last dash in a file which contains strings with hyphens or dashes. Matching only numbers is pretty easy to do with [0-9]+ . My regex is : \s\d {3}\s. The following is my case, abc def = ghi. String looks like this: Foo bar bar bar foo Foo bar bar foo This Foo bar foo bar . I tried several ways for last occurrence, but they are not working. Dec 4, 2011 · Explanation: \\. Third with matchdate and more. ) Jul 15, 2016 · Since you don't want to replace the first slash, you need $1/$2 at the beginning of your replace string. ([^-]*?) Capture any character except - any number of times, but as few as possible into capture group 1. replace part of first line in a multi line string. Jul 20, 2016 · In the linked 2nd example by @anubhava it's matching only the very first total word found because the pattern (?!. Accessing it depends on the language but in general is just matter of doing match[1]. Should be: Tab 2-3. 2. =SUBSTITUTE(A1,"France","",2) Using this Substitute formula you can replace the nth occurrence of a number too. 1. Turns out the accepted answer above by @stema does the job when the backslash is replaced with a forward slash. Here your match will be in capture group 1 (\1 or $1) If you regex flavor support \K (resets the match): ([^-]*-\s*){2}\K. sub function to replace 2nd dot with _ as per requirement. IgnoreCase as the pattern does not match only lowercase characters. If there is at least one match the first match will be the one of Feb 13, 2009 · The idea is that you match the whole sequence ("ipsum" plus the next word) in the normal way, then use a capturing group to isolate the part that interests you. Nov 27, 2023 · 1. This should work in most regex dialects. txt. Regex matching multiple For more details, see the regular expression parameters documentation. /i = case insensitive. {2} Repeats what is in the ( ) 2 times. 0. Using Regular Expression. 999 161. For example: String s = "Lorem ipsum dolor sit amet, consectetur " +. This means that it will extract 12 from the string str_123_1_3, which is not what you I believe. That's called "greedy matching". That's why the replace string has to be $1/$2,. DOTALL flag so that the dot matches newlines as well as other characters. 74). Apr 10, 2014 · In this case, if I ask for 2nd occurrence of slash (/) from last , it appears before folder4, and I expect to return substring from 2nd last occurrence of a character. Notice that all characters that are not enclosed by () 's need to be re Jul 8, 2018 · Regex: match last and second-last character. + matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy) A repeated capturing group will only capture the last iteration. Click To Copy. *NSTR. Value; Sep 13, 2020 · Matches zero or more characters other than linebreaks, dots and equal signs, dropped later with \K, and \. If you want to get everything after second occurrence of a set character, in this example, we’ll use a dash, use this code. for example the characters between the second and third occurrence should match: 'US' Sep 27, 2016 · For example, java has a String. To match the first occurrence on every line you need to anchor the pattern to the start of the line. MustCompile(`(MYSTRING=). Possible examples. It's just checking that there's indeed a 3th of that back-referenced capture group 1. Fourth line. Left of Assign: YOURSTRING Dec 5, 2023 · Matcher. For the second line, my capture target is "ghi", and for the 3rd line, my capture target is "ghi". dart:9:25 - non_constant_identifier_names. - pull the first line into the pattern space of sed, - N will pull the next (second) line into the pattern space and. I need help on regex to select nth occurrence. Jul 21, 2019 · It uses the pattern of \w+ AAAA \w+$, which get's the last occurrence of 'AAAA' with there be-siding words alongside of them, all using \w+ (twice), and $ (once). Second line. If you need more information on a specific topic, please follow the link on the corresponding heading to access the full article or head to the guide. $ End. Above can be done by defining and applying the following macro: Go to first line containing the to be edited text. In your example, the matches are Group 1. Apr 20, 2016 · The regular expression answers above are very good performance wise. Aug 12, 2013 · I'm trying to match the first and second occurrence of a string in perl. This method returns the first substring in input that matches the regular expression pattern. Feb 26, 2020 · i have a string in R and i would like to match everything after 2nd occurence of a word using a regex. Explanation: [^-]* Matches any number of characters just not -. In each line is a string with a series of letters, numbers, and dashes. Match(value); return result. My intended extract is "attributes_" located right after "root_first_attributes_0_second_". – Aug 19, 2015 · This attempts to show how to replace every Nth character with a newline without copy-pasting parts of the sequence. Replace except for the first occurrence in Perl. In this scenario the string is " - " in the following line info - Name non-constant identifiers using lowerCamelCase - lib\util\constants. Tab 2-3-jk2. Some inputs I'm trying to match: i_123_Mobile. Example data: Stack@overflow:Stack@overflow. If that's the case, reluctant quantifiers may be used as described herein. pdf. matches newlines checked) Note that a positive lookahead was used this time. Try this regular expression: $[^$]*\) returning string between last occurrence of a character Regex extracting characters between last and second last Matches a "\" character (char code 92). * before the regex instead of positive look behind and use this regex and capture the second occurrence of IP from group1, Here, . Mar 15, 2016 · Have simple text on single line - and want to match all of the text after the final tag. I need to replace what's between MYSTRING= and \n with a string of my choice (like previous stated in the original post). 4. This will take you to the end of the string. If a given file name doesn't match the regex (if it already is correct), the name is returned as-is, which is a quiet no-op in the context of Rename-Item. Dec 18, 2015 · I need to get the SPECIALTEXT, basically what is after the second occurrence of the ####. let say i have phrase as below. *\b\1\b) will not consider newlines. – MPaul. I need to remove everything after the second occurrence of a - and keep the file extension of . *`) s := re. Result of this regex would be Apr 20, 2020 · On a Bash shell in Linux I'd use sed with the following commads: sed -e 'N; s/4s/3s/2' < file. Is it possible to perform my Regex on the second occurrence of a specific symbol only? Regex being used: @. May 9, 2014 · I did search the forums and only found solution that goes beyond regular expression itself (i. /m = multi line mode. – Nov 25, 2015 · I could use a regex that would match "Everything after the second-to-last backslash". 2nd Capturing Group. *>\d+. Jun 29, 2018 · Getting nth occurrence of a match is in most cases achieved through extracting all, multiple matches from the string, and then getting the necessary item through its index. *. Given this source string: string input = "1-22-333-4444-55555-666666-7777777-88888888-999999999" ; The regular expression to match the 3rd field, where the first field is 1 rather than 0 looks like this: Feb 25, 2019 · If you want to skip matching the first IP, you can use . Aug 9, 2010 · This may substantially slow your program. I'd need to extract the first one (which is 25. Since its backtracking it will match the pattern nearest the end of the line and stop since it found a match. Feb 2, 2019 · Solution 1: To get the last occurrence, just use: Click for Demo. I rewrote the original to use backslash like this: ([^\\]+$) And I made this code and test. 3 Answers. Sep 16, 2019 · That means this Google Sheets function is built in to substitute the nth occurrence. Jan 26, 2017 · "Zero-length assertions" allow us to move the point in the string where the regular expression engine is looking at, without having to match any characters to get there. -\s* Matches a - and any number of spaces. Notice how the subexpression with nested parentheses spells out a number of alternatives which between them allow e only if it isn't followed by nd and so forth, and also take care to cover the empty string as one alternative which doesn't match whatever is disallowed at that Mar 19, 2017 · It just needs a re. Consult the documentation for the language you are using. Example: Formula replaces the second occurrence of the country name ‘France’ with blank. nohyphen. Nov 7, 2016 at 19:28 | Show 1 more comment. /,\s([^,]+)$/. Sorted by: 10. 74thiscanbesomethingelse. Regular expression, match between the first, second, third etc. matches literal dots. So the string above will return true, but the two below will be false: 1. this is what i should get in return". If the first character after the " [" is "^", the class matches any character not in the list. Looking at your code, I think you assume I am looking for only h2, but I am looking for the second occurrence in a regex match. e the return string should be folder4/ Jun 10, 2014 · I'm trying to replace the second occurrence of the colon with a dot: 05:23. I was specifically looking for a regex that matches the last forward slash (/). May 26, 2022 · Regex Match first occurrence. Result of this regex would be: Replace everything – after this –. \K Resets the match, and only keeps the rest. (To avoid this cost while retaining the grouping behaviour, use the extended regular expression "(?: )" instead. abc def ghi=jkl mno. Two of these in a row gives you the first two items in your comma-separated list. The database name might have letters, numbers, and underscores. *\/ captures any character in a greedy manner followed by a literal / and stops at last occurrence of the pattern you want to match and captures all data after You could omit the RegexOptions. SRE_Match object, and of course get the zeroth Nov 3, 2017 · The code below uses a combination of; stringr::str_locate_all() which outputs a list of lists, the first 'column' in the matrix output for each entry is the start value of each occurrence of the pattern. Plus to find the rest of the text after ' - '. *) Replace: Group 1 (typically, the syntax would be $1 or \1, not sure about Ant) Again, ^. Therefore, we can call Matcher. *), and replace the whole match with Group 1. 1st Capturing Group. what i should get in return I've tried something like ([^is]+)(?:is[^is]+){2}$ but it doesn't work. 2. 05-01-2019 06:27 PM. SRE_Match. You then capture the end of the line to Group 1 with (. needs support from the programming language). 1| Apr 5, 2011 · Each regex expression comes with the following possible flags and typically defaults to using the global flag which will match more than one occurrence: /g = With this flag the search looks for all matches, without it – only the first match is returned. + - match a backslash, and any characters after it. And the code is: where = [m. However it will select the first 3 digit number, that is 311. answered Mar 2, 2017 at 11:48. To do this, insert an Assign Activity. Thank you for the response. I can do that with: var re = regexp. In this example, the function `find_second_occurrence` is defined to find and return the Oct 4, 2023 · Regular expression syntax cheat sheet. To capture the Nth field in your string, you need to capture that string of digits that is preceded by N-1 fields. I can't get it done. However, for quick substitutions I would suggest using macro's. The following regular expression will match zero, one or two substrings. Also, the string is an example, so there is no guarantee h2 will come immediately after h1. The Zero-Length Assertion that we are going to use is called LOOK AHEAD , and its syntax is as follows. find () n times to get the n-th match. May 12, 2013 · I'm writing a regex to extract the second occurrence of matches in javascript. However, if the e (for “extract”) parameter is specified, REGEXP_INSTR returns the begin or end character offset for the part of the subject I am trying to write a regex that can find the nth occurrence of a number match (where N is a number that can increment in a for loop). Sep 18, 2014 · Using regular expressions to match the first pattern occurrence in each line. Matches (String) method. Then we just need to collect the second result as you mentioned. ^ Assert position at the start of the line. Each row of each embedded matrix thus contains the start and end positions of the pattern. replace(sub, wanted, 1) newString = before + after. Tab 3-3-Yuwk-3-k-l-s. You can verify by adding the word total somewhere at the beginning of the sample mail text. Match 1 or more of the preceding token. Example: Regex: Input: thiscanbeanything$25. Start recording macro to, lets say,t ⇒ qt; Jump to start of line ⇒ 0; Jump to third occurrence Dec 22, 2012 · getting the text between the first and second occurence of a sequence 4 Regular expression to match everything between first occurrences of two words, both of which appear more than once Feb 5, 2015 · 3. Dec 10, 2020 · A regex match returns the match and any captured groups. "adipiscing elit. This formula is case sensitive. >>> s = '''First line. var regEx = new Regex(pattern); var result = regEx. Another alternative is to use two regular expressions, one to separate the string into enclosed and May 30, 2017 · 1. start() for m in re. 32). Change you regex to match any digit sequence ( \d+) and tell REGEXP_SUBSTR to return the second occurrence of the regex by passing 2 in the fourth Feb 28, 2022 · I tried using loops but I only managed to replace only the second occurrence and nothing after using this sample code I found here. start (): int nthOccurrenceIndex(String input, String regexPattern, int nth) {. public static string TrimTrail(this string value, string pattern) {. May 2, 2019 · Hi all, I am trying to match everything after the second to last dash in a file which contains strings with hyphens or dashes. */ matches to the last slash. I need to match the hyphen. Note. Explanation of regex: Jun 29, 2018 · How can I find and replace for example every third occurrence of 'x' character in string with regular expression? There is similar question but it addresses every fourth character but I need every "nth" occurrence of specific character in string. Apr 8, 2011 · It does not. - `s/4s/3s/2' will then replace the second occurrence Feb 6, 2024 · Below are some of the ways by which we can find the second occurrence of a substring in string in Python: Using find () function. In such case a number is needed to tell the engine how many repetitions are expected. The String looks like this: So I only want to match: 1 2 3 5 10 20 30 50 100 or any other number that a user might want to enter. Matching when an arbitrary pattern appears multiple times. Nunc eu tellus vel nunc pretium " +. i_123_abc_Mobile. See examples below: ab2372347234tfashdjfawhewe-c3 Aug 9, 2023 · We will find the index of the second substring by using a simple formula –. Explanation: ^ indicates the pattern should match from the start of a line. See proof (JS). In this example I want to replace every 13th occurrence of character @ with a newline. e. Later on I might need to extract the third one (which is 54. Search for: and replace with. I'm using JavaScript replace() method, this below example will change every x character to y: . Please refer to my code snippet below for an example. Nov 28, 2012 · 21. To match the second occurrence of a number in a string, you could use the following regular expression: (?=\d)\d. Nov 16, 2018 · Replacement operand $1_ then uses the value of the 1st (and only) capture group ( $1) followed by a literal _ to replace what the regex matched, which effectively replaces the 2nd - with a _. pdf at the end. txt should contain your input lines. By default, REGEXP_INSTR returns the begin or end character offset for the entire matching part of the subject. May 16, 2021 · Then using re. This page provides an overall cheat sheet of all the capabilities of RegExp syntax by aggregating the content of the articles in the RegExp guide. Second opinion on PCB design for relay made in Altium Aug 26, 2019 · Regex for Replace everything after second occurrence of character. Mustofa Rizwan. R - regular expression, match after second or third occurence. 1 How to match only 2nd result? Regex match only first or only second occurrence. Example: /ipaddress/databasename/ I need to capture only the database name. A regex match second occurrence is a powerful tool that can be used to find specific parts of a string, or to extract information from a string. May 13, 2015 · Say you want the 1st and 3rd occurrence. ( Constr1 )+. regex101: Second Occurrence. 999 61999 161 human. See regex in use here. As you can see in the output, everything including and after the second occurrence of an @ has been removed, but the text before it stays. When it hit the end of the string, backtracking occurs. i. Also, consider. But since what follows the second group is another / (the 2nd one on the line), you need to replace it with the ,. Replace(str, "Replacement"); Result of str: Replacement this Hello Hello World then: I would like to replace all Feb 21, 2020 · I have a string and I am trying to use a perl style regex to match the part of the string that occurs after the second occurrence of a particular string. Replace Second Occurrence. finditer(sub, string)][n-1] before = string[:where] after = string[where:] after = after. (length of input string – length of the last split part – length of the substring) parts = txt. Jun 1, 2022 · Please note this pattern is not robust and will just ignore the first line and start to match from the second line. In other cases, I might be looking for the third occurrence. see the following link . I have made a regex pattern for Q2. Example: String str = "Hello this Hello Hello World"; String pattern = @"(H. Default: c. Regex to match nth occurrence and return part of the next line of a string. Explanation. . Aug 7, 2015 · regex match second occurrence of a string in Perl. Here is a working test: >>> import re. ye zm zd jg un pd lr cq uy gh