/pattern\C
Appending \C anywhere in a search pattern forces the entire search to be case-sensitive, regardless of whether ignorecase or smartcase is set.
search #search #case-sensitive #ignorecase #smartcase #normal-mode
:set grepprg={cmd} grepformat={fmt}
Vim's :grep command delegates to an external tool defined by grepprg, then parses the output according to grepformat to populate the quickfix list.
\@= and \@<=
Vim's regex engine supports zero-width lookahead and lookbehind assertions — \@= and \@<= — which let you match text based on surrounding context without in
:~
The :~ command repeats the last substitution but uses the current search pattern instead of the original pattern.
:s/pattern/\U&/g
Vim's :substitute command supports case-transformation escape sequences in the replacement string.
search #search #substitute #ex-commands #editing #text-objects
:s/pattern/replacement/e
The e flag in Vim's :substitute command silently ignores the "E486: Pattern not found" error when the pattern does not match anything.
\@<= and \@<!
Vim's \@<= and \@<! atoms let you write zero-width lookbehind assertions — they check what comes before the match position without consuming characters.
:s/\n/ /
One of the most confusing asymmetries in Vim's substitution syntax: \n and \r mean different things depending on whether they appear in the pattern or the repla
:%s/\w\+/\u&/g
Vim's substitute command supports case-conversion modifiers in the replacement string.
/\c
Vim lets you override the ignorecase and smartcase settings on a per-search basis using the \c (case-insensitive) and \C (case-sensitive) atoms directly inside
\@!
In Vim's regex engine, \@! is the negative lookahead assertion.
[d
The [d command searches from the beginning of the file for the first line matching the define pattern for the word under the cursor, and displays it in the stat
\%[abc]
The \%[.
:s/\(\w\+\)/\u\1/g
Vim's substitute command supports case-change modifiers in the replacement string that let you capitalize, uppercase, or lowercase matched text as part of the s
:%s/pattern//n
The n flag in the substitute command suppresses the actual replacement and instead reports the match count.
:%s/\zsparseData\ze(/processData/g
Vim's \zs and \ze atoms let you include context in your search pattern without including that context in the replacement.
/\%d{decimal}
Vim's regex engine supports special atoms that match characters by their numeric value rather than their glyph.
:let i=0 | g/pattern/s/pattern/\=printf('%d', i+=1)/
By combining :let, the :g global command, and an expression substitution with \=, you can replace every match of a pattern with a unique incrementing number.
\V
Vim's default search mode gives special meaning to characters like .
:%s/pattern/replacement/ge
The e flag on :substitute silences the "Pattern not found" error that Vim normally reports when a substitution has no matches.
