Questions tagged [regular-expression]
Regular expressions (often shortened to "regex") are expressions written in a declarative language used for matching patterns within strings.
33
questions with no upvoted or accepted answers
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How does `\zs` interact with syntax matches?
Consider the text:
foobarbaz
First we highlight the regular expression /foobar/:
:syntax match Special /foobar/
Next we highlight the regular expression /foobarbaz/:
:syntax match Error /foobarbaz/
...
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7
votes
0
answers
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In a regex, why aren't the multi + and {1,} always parsed exactly the same way?
From :h /\+:
\+ Matches 1 or more of the preceding atom, as many as possible.
And :h /\{:
\{n,} Matches at least n of the preceding atom, as many as possible
It seems the multi + and {1,} have ...
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5
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174
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Is it possible to use syn match dynamically
I know that syn match can work with the regular expression to do some custom highlight settings.
I'm thinking if it can work dynamically.
For example, I'm doing a c++ project and I want to highlight ...
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4
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647
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Highlight python raw strings as regular expression
I heard someone had set up their editor to highlight python raw strings as regular expressions, e.g. for Django:
urls(r'^site1/(\d)*/new$'', ...)
Unfortunately my googleing doesn't get me anything. ...
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3
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How do I turn on `\v` by default for Vim/Neovim regexes?
After years of using Vim and then Neovim, I still find myself forgetting to escape parenthesis and the | character when I intend to use their special behaviour:
If I want to search for "this"...
- 2,122
3
votes
0
answers
177
views
How to replace a string not followed by a / character?
How do I replace all occurences of a string that are not followed by a forward slash character in vi (or vim)? I want all occurences of '<[text]', but NOT '</[text]' to be replaced with '<db:[...
- 131
2
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115
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Can Ultisnips regular expression match forward?
The question may be also phrased as, can Ultisnips regular expression match after the current cursor?
My goal is to have a postfix of curly bracket for LaTeX subscripts. Say I want to type a_{bcd}, ...
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2
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Use different regex engine for different use cases/plugins
By default re=0, however I'm running into those issues:
re=1 makes ctrlp.vim much faster
re=2 makes vim-jsx-pretty much faster
And somehow re=0 can't seem to get those right for me.
Is there a way ...
- 121
2
votes
0
answers
526
views
Regex to remove newline; works in one vim instance, but not another
Trying to remove newlines with a regular expression (not shift-j).
I have one vim install where
:g/conf/s/\n//
works as intended, removing a newline from all lines containing 'conf'.
I have a ...
- 21
2
votes
0
answers
225
views
custom fold expression to fold functions
I would like to create a custom fold expression for functions of the form
x <- function(a,b,c) {
...
... body
...
}
where the lines starting from function(...) until the closing brace are ...
- 2,008
2
votes
0
answers
36
views
Substitute regex group in prompt when replace with confirmation
I am using vim to replace with simple regex:
%s/Foo\(.\)/Bar\1Biz/gc
I wanna to confirm each occurence and Vim asks:
replace with Bar\1Biz (y/n/a/q/l/^E/^Y)?
Is it possible to substitute group (\1) ...
- 21
2
votes
0
answers
178
views
How to match patern inside a syntax region start pattern?
Python group regexp has this syntax (?P<idGroup> ... ), where:
(?P<idGroup> is the beginning of a region.
... is the content of the region.
) is the end of region.
I highlight start ...
- 21
1
vote
0
answers
55
views
\zs not working in syntax file?
Udated 2023-09-11: Changed example to asterisk as it is simpler and the question now refers to \zs instead of \ze as \zs seems to be the issue.
I am trying to adapt the VIM Markdown syntax file so ...
- 163
1
vote
0
answers
34
views
Interaction between zero-width matchers and backreferences
Take a file with the following text as a workbench.
hello world hello world
With the cursor at the beginning of the line, here's how \1 interacts with \(…\), \@=, and \@!
#
regex
matched text
text ...
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1
vote
0
answers
245
views
Bulk file rename in Vim Visual Block Mode
I am using VIM Renamer plugin to bulk rename files,
I want to replace
E008_r5_Haz_Area_Class NAT GAS.pdf
E009_r4_Haz_Area_Class.pdf
E010_r4_Haz_Area_Class MP STEAM.pdf
E011_r3_Haz_Area_Class.pdf
...
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1
vote
0
answers
307
views
Multi-line regex with specific beginning and end?
I can't seem to find the answer to this anywhere.
I'm trying to get started with include-search, and since I'm working in golang right now, I'm trying to get vim to include a set of imported files.
E....
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1
vote
0
answers
94
views
search and replace: remember case in substitute
I have to change strings:
fetchrandomData to fetchReportingData
FETCH_RANDOM_DATA to FETCH_REPORTING_DATA
I can change ca_z and CA_Z to ca_t and CA_T respectively with command:
%s/\v([Cc])([Az])(_)?...
1
vote
0
answers
47
views
How to specify Perl encoding in Vim?
For a buffer containing text "กขค" with UTF-8 encoding:
:perldo s/ข/x/g => "กxค"
but :perldo s/[ข]/x/g => "xx�xxxxx�".
How to specify Perl's encoding?
Note: Currently I have to use %:!perl -C -...
- 11
1
vote
1
answer
59
views
Syntax - Match word based on a previous match
I want to highlight all words that have been matched in another syntax region. Using something similar to regex capture groups, for example given a file:
{highlightme} asda asasd asd asd as ...
- 163
1
vote
0
answers
185
views
Disable regex searching in specific windows
I usually have about 4 or 5 windows open in Vim. Currently - one of my files is very large(in size) - a CPU cache trace. Every time I search with "/", vim searches all windows before returning the ...
- 11
1
vote
0
answers
40
views
How to access syntax elements
I try to inline one syntax in another syntax (to be explicit: CSS in JS template strings). I'd like to build on top of the existing CSS definitions and not create new ones.
Question: Is it possible ...
- 41
1
vote
0
answers
324
views
Matchit Plugin: issues when resetting regular expressions in "b:match_words" for detecting Matlab file keywords
I'm trying to implement a custom regexp string to be used by matchit.vim for identifying matching keywords that can be jumped between with %.
I found a utility from FileExchange (in the ftplugin ...
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0
votes
3
answers
45
views
Strange result for grouping replace in a line
The file contains only one line:
four_blank_space + "TE:" + one blank space + "trailers" + one blank space
I write a grouping replace:
:1s/\(\s\+\)\(.\+\):\s\+\(.\{-}\)\(\s\{0,}\)...
- 1,086
0
votes
2
answers
251
views
Regex to select indented lines preceded by one top blank line not working in Vim
I made the regex:
/^\n\t(\n|.)*?\n$/gm
(prepended with \v inside Vim) to select consecutively indented lines (with tab) separated by a top blank line.
But while it works in other languages it doesn't ...
0
votes
0
answers
140
views
Regex multiple lines search, matched, but highlighted only what initially is on screen
Let's say I have the following fantasy code
// a long definition of a structure
struct long_struct {
...
};
There are tons of multiple lines inside such block of code. It cannot be displayed ...
- 121
0
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0
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122
views
Matching patterns in autocommands
I'm trying to match a particular path pattern for an autocommand. I have this:
au BufRead *.md if expand('<amatch>') =~ "/path/to/dir/[0-9]"
It successfully matches, eg.
c:\soemthing-...
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0
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0
answers
92
views
Jump between all the matchadd matches for a group?
One can use the matchadd function to add to groups of matches that will be highlighted in the VIM editor.
But how does one jump between the matches within a specific group?
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54
views
How to add spaces upto a fixed column before a certain character in the line
Suppose I have a line in which the dot appears. Then, I want to add spaces upto fixed number of columns to indent my code. Also, I can't install plug in. Is there any way I can do with just command ...
0
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0
answers
311
views
syntax highlight regex not matching
I am writing a plugin where a certain filetype must possess their own syntax highlight. Therefore I have created
.
├── ...
├── plugin
└── syntax
and syntax/newfiletype.vim containing
syntax clear
...
- 109
0
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0
answers
159
views
Spelling mistake regex
I have a large text file of an OCR'd book where many words have been broken and hyphenated at the end of a line. Eg.
In his newest book of language ex-
ploration, Professor Asimov ranges over
I can ...
- 1
0
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0
answers
266
views
can not make this regex pattern work in "very magic" mode
I am trying to construct a regex pattern to match characters inside two # characters. For example:
#abc#bc#cd#
I would like to match abc, bc and cd. The following regex without using magic mode ...
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0
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36
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Search and replace any number separated by : trailing with number or alphabet separated by . and / or - or _
Search pattern examples
"0:4.10.5-5.el7"
"0:0.7.7-13.20120626.ov7"
"6:4.14.8-6.po7_3"
How to search and print all occurrences like above patterns where the first number can be any number ranging ...
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0
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0
answers
147
views
How to pass '\v\C[pattern]' into the built-in match() VimScript function
I am attempting custom fold logic as my first VimScript.
What works for me: USING VERY MAGIC (\v) and explicit CASE SENSITIVE (\C), find python comments in foo.py that begin with hash, then Roman ...
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