261,163 questions
-5
votes
2
answers
84
views
JavaScript replace regex produces two trailing commas for "a,b,c " string
Background
I'm working on processing a comma-separated username list (for an ACL whitelist optimization in my project) and need to normalize whitespace around commas, as well as trim leading/trailing ...
- 818
-4
votes
0
answers
55
views
Replace text using sed, problem with regular expression [closed]
I have a file plenty of text strings like
text {\LXXX} more text
where XXX can be any character and its lenght is not necessary of 3 characters. I need to replace all {\LXXX} by {\LXXX}}, i.e., add } ...
- 197
Advice
0
votes
6
replies
79
views
Match a string not preceded by a pattern
I want to match a string according to a pattern but only when it is not preceeded by an other pattern.
const source = "abc.def.Ghi\n\
@:test(abc.def.Ghi2)";
const re = /(?!\()([a-z]\w+\.)+([A-Z]\w*)/g;...
- 5,393
-3
votes
1
answer
51
views
Using Regex in Google sheets to extract a specific string [duplicate]
Using Regex in Google sheets, I need to extract "content1" in a separate cell (B1) from the 1st bracketed set without the brackets
This entire string will appear in cell A1:
[content1] [...
5
votes
2
answers
130
views
Hex escape sequences in bash regex range have no effect
Here is a bash script:
#!/bin/bash
char=$'\x01'
if [[ "$char" =~ ^[\x01-\x20\x7F-\xFF]$ ]]
then
echo "Unprintable"
else
echo "Printable"
fi
The script ought to say ...
- 2,986
-2
votes
1
answer
128
views
Regular expressions for extracting text inside curly brackets [closed]
I'm working with some marked text and I need to extract information in order to use later. I want to use regular expressions from Python using the module re, but I can't construct the right expression....
- 197
-1
votes
2
answers
78
views
Force sumif() with wildcard and fixed pattern
I have a Google spreadsheet with the following values:
+------------+-----------------------------+
| G | F |
+------------+-----------------------------+
| Hours (G)...
- 8,121
-6
votes
1
answer
87
views
Best way to extract a names from a string [closed]
I have a function that takes a string as an input and tries to extract the name and surname. It is a combination of NER and regex to try to extract the names present. Is there a better or more ...
- 1
-3
votes
0
answers
82
views
How to delete evertything after .txt [closed]
I have tried \txt.*$, (^.*?\.[txt]+)(.*)$, (^.*?\.[.txt]+)(.*)$ and nothing matches
Here is an example of the file:
download_list/list_left/14khashintipasswordai.txt
download_list/list_left/...
0
votes
1
answer
68
views
How to access named capture groups in C++? [duplicate]
On Regex101, I have simple Regex with a named capture group in ECMAScript flavor:
(?<name>.*)
I'm trying to do the same thing in C++:
#include <iostream>
#include <regex>
using ...
- 61.2k
1
vote
2
answers
87
views
Replace a long case statement involving regex with a hash
I'm parsing a number of text files of different formats. Some are csv, some are xml and some even txt. I have a case statement that checks if a certain string is contained in the first 100 bytes of a ...
- 63
-3
votes
0
answers
91
views
secure removal of tags from HTML content [duplicate]
The classical problem of HTML tag removal, to obtain a plain text content, may be usually addressed with patterns like : <[^>]+?>.
But what if you got this kind of content : <exampletag ...
- 36
-3
votes
2
answers
187
views
Regex to match all but this pattern [closed]
I have filenames with this pattern [a-zA-Z0-9]{10} and .txt extension. They might also contain a pattern like this [super] and it could be either before or after [a-zA-Z0-9]{10} with '_' separating ...
- 3,057
-4
votes
2
answers
111
views
RegEx in Javascript, Match multiline text between Tokens [closed]
I have this RegEx in JavaScript:
/^\d{4}-\d{2}-\d{2} ([a-z,]*)((.|\n|\r)*?)/mig
2025-11-13 bb Test.
2025-11-12 bb Mail von Test
testd
trest
Tes
2025-11-12 bb Mail v
Regex101
but I need the ...
- 1
Best practices
0
votes
4
replies
99
views
How to search through Unicode text with ASCII input in Python
I have a corpus of text which includes some accented words, such as épée, and I would like people to be able to easily search through it using ASCII input. Ideally, they would simply type protege or ...
- 2,111