3,345 questions
3
votes
3
answers
106
views
Find regex match separated by two semicolons
This is the type of text I'm working with:
* went to the building; opened the door; closed the door; picked up some money ($20)
* walked next door; knocked on a window; purchased an apple pie ($6.95)
*...
-6
votes
2
answers
170
views
Only match phrases when not part of other phrases with regex
I want to do the following with Javascript regex:
Match words or phrases inside larger texts.
However, if a word/phrase is part of a set of excluded phrases, skip the match.
For example: I want to ...
- 1,548
0
votes
1
answer
47
views
Discard a match if one pattern isn't followed by another
I'm trying to find numbers in Notepad++ that are followed by </tspan>, which is followed by many characters including newlines, and in the end it should be fill:# followed by 00d5ff.
So far I ...
- 1,338
2
votes
1
answer
66
views
Regex expression to find end of multiline YAML codeblock
I'm working on adding folding markers to my FastColoredTextBox for YAML. For this I need to detect the start & end of a block of comments (with 2 regex) I want to be able to collapse. For example
#...
- 41
-1
votes
1
answer
52
views
Regex matching with multiple negative look behind conditions [duplicate]
I would like to create a regex pattern that does not match
multiple negative look behind patterns.
But if I try to compile a pattern like
import re
split_pattern = re.compile("(?<!AA|BAB|CAC|...
- 1,483
3
votes
1
answer
66
views
Removing a named reference and all its calls with AutoWikiBrowser and .NET regexes
I wonder if it would be possible to create a .NET regular expression that would delete a reference named Wikipedia containing a certain text, as well as all its calls in the page that don't contain ...
- 378
1
vote
2
answers
84
views
Regex for a date not preceded by = or |
I'm looking for a regular expression to use with AutoWikiBrowser (flavour .NET) that allows me to encapsulate simple dates in Wikipedia.fr {{date}} template, but not if they're preceded by an = (which ...
- 378
3
votes
3
answers
121
views
regex to match all unescaped '$' in a regex string
I want to build a regex that will match all unescaped $ in strings that represents a regex.
In this case, a character is unescaped if it contains an equal number of backslashes behind it (each pair of ...
1
vote
1
answer
65
views
Confusing behavior of a capturing group in a positive lookbehind in a Java regex with Pattern.matcher
The following issue is observed only on Java and not on other regex flavors (e.g PCRE).
I have the following regex: (?:(?<=([A-Za-z\d]))|\b)(MyString). There's a capturing group on [A-Za-z\d] in ...
- 335
0
votes
1
answer
54
views
Matching text inside single but not multple delimiter characters in a regular expression
I’m to find a regular expression to match strings inside single but not multiple particular characters. For example:
this is =one= and =two= but not ==three== or ==four== etc
Here I’m using = as a ...
- 16.9k
1
vote
2
answers
172
views
Tell if a Python regex string has a lookaround
I'd like to be able to reliably tell if a Python regex string contains a lookahead or lookbehind. It seems to me the code:
bool(re.search(r'\(\?=[^)]*\)|\(\?!', regex_string))
should match when a ...
0
votes
3
answers
91
views
How can I exclude a single character from a list only when followed by certain other characters?
I want to parse certain character combinations which represent musical pitches from the begining of a string. For that I am using regular expressions (NSRegularExpression in Swift, if that matters). ...
- 577
1
vote
3
answers
119
views
Regex to match certain numbers from and to a range
I have tried chatgpt for a correct answer but it doesn't give me a working solution.
I want to match (only) the digits before the "m2" and only if it is preceded by the wording "...
- 21
1
vote
2
answers
74
views
Escaping negative lookbehind in regex inside XSLT w/ Saxon
I am trying to do string replacement in an XSLT 2.0 stylesheet. I am doing this via Saxon, in oxYgen or in my own Java code. The string replacement I am trying to do is:
remove all open parentheses ...
- 49
2
votes
3
answers
70
views
Regex to find string not followed by separator and 1 or 2 digits
I need to make a regex (.net flavour) that matches only "sometext" in the following strings (the second line has a space at the end):
sometext
sometext
sometext dsf 2131
sometext-1234
but ...
- 1,507