How do I change the case of matched text in a Vim substitute command?
\u and \l in :s replacement
Vim's substitute command supports special case modifiers in the replacement string that let you change the case of captured text on the fly.
Search: S substitute line
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How do I use expressions in Vim's substitute replacement?
:%s/pattern/\=expression/g
Vim's substitute command supports expression replacements using \= in the replacement string.
How do I zero-pad every number in a line using a Vim substitute expression?
:s/\v\d+/\=printf('%04d', submatch(0))/g
Substitution expressions let Vim compute each replacement dynamically, which is ideal when plain capture groups are too limited.
How do I repeat the last substitute command quickly?
&
The & command in normal mode repeats the last :s substitution on the current line.
search #search #substitution #ex-commands #repeat #normal-mode
How do I zero-pad every number in a buffer using one substitute expression?
:%s/\d\+/\=printf('%04d', submatch(0))/g
When you need fixed-width numeric fields, manually editing each number is slow and error-prone.
How do I split a line by inserting a newline with the substitute command?
:s/,/\r/g
In Vim's substitute command, use \r (not \n) in the replacement to insert a real newline.
How do I swap the first two comma-separated fields on each line with one substitute command?
:%s/\v^([^,]+),([^,]+),/\2,\1,/<CR>
When CSV-like data has two columns in the wrong order, manually fixing each line is slow and error-prone.
How do I uppercase only the characters inside a visual selection with :substitute?
:'<,'>s/\%V./\U&/g
When you need to transform text in-place without touching surrounding content, \%V is one of Vim's most precise tools.
How do I reuse my last search pattern literally in :substitute without re-escaping it?
:%s/\V<C-r>//gc
When your last search pattern contains punctuation, slashes, or regex atoms, retyping it inside :substitute is error-prone.
How do I replace only part of a match in :substitute without capture groups?
:%s/\vfoo\zsbar/baz/g
When your match has a stable prefix but you only want to replace the trailing segment, \zs is often cleaner than introducing extra capture groups.
How do I run a substitute command without changing my current search pattern?
:keeppattern s/old/new/g
When you run a :s or :g command, Vim updates the search register (@/) with the pattern you used.
How do I run a substitute or filter command without Vim automatically repositioning my marks?
:keepmarks
When Vim executes commands that move or reorder lines — such as :sort, :%!sort, or :s/// across ranges — it automatically adjusts named marks to follow the
How do I use capture groups to rearrange text in a Vim substitute command?
:%s/\(pattern1\)\(pattern2\)/\2\1/g
Vim's substitute command supports capture groups that let you match parts of text, remember them, and rearrange or reuse them in the replacement.
How do I reuse my last search pattern in a substitute command without retyping it?
:%s//new/g
Leaving the search field empty in a :s command tells Vim to reuse the last search pattern from / or .
search #search #substitution #ex-commands #regex #productivity
How do I search and replace text across an entire file?
:%s/old/new/g
The :%s/old/new/g command replaces all occurrences of old with new across every line in the file.
How do I count the number of lines containing a pattern without making any replacements?
:%s/pattern//n
The n flag in the substitute command suppresses the actual replacement and instead reports the match count.
How do I swap two parts of a line using capture groups in a Vim substitution?
:s/\v(pattern1)(pattern2)/\2\1/
Vim's substitute command supports capture groups (also called backreferences), which let you rearrange matched portions of text.
How do I repeat my last substitution across the entire file?
g&
The g& command repeats the last substitute command across the entire file.
How do I limit a search or substitution to only the text I visually selected?
\%V
The \%V atom in a Vim pattern matches only inside the last visual selection.
search #search #visual-mode #substitute #regex #text-objects
How do I use case modifiers like \u and \U in a substitution replacement to change capitalization?
:%s/\v(\w+)/\u\1/g
Vim's substitute command supports case-modifier escapes in the replacement string: \u uppercases the next character, \U uppercases all text until \E or end of r