问题
In vim, I know we can use ~
to capitalize a single char (as mentioned in this question), but is there a way to capitalize the first letter of each word in a selection using vim?
For example, if I would like to change from
hello world from stackoverflow
to
Hello World From Stackoverflow
How should I do it in vim?
回答1:
You can use the following substitution:
s/\<./\u&/g
\<
matches the start of a word.
matches the first character of a word\u
tells Vim to uppercase the following character in the substitution string(&)
&
means substitute whatever was matched on the LHS
回答2:
:help case
says:
To turn one line into title caps, make every first letter of a word
uppercase: >
: s/\v<(.)(\w*)/\u\1\L\2/g
Explanation:
: # Enter ex command line mode.
space # The space after the colon means that there is no
# address range i.e. line,line or % for entire
# file.
s/pattern/result/g # The overall search and replace command uses
# forward slashes. The g means to apply the
# change to every thing on the line. If there
# g is missing, then change just the first match
# is changed.
The pattern portion has this meaning.
\v # Means to enter very magic mode.
< # Find the beginning of a word boundary.
(.) # The first () construct is a capture group.
# Inside the () a single ., dot, means match any
# character.
(\w*) # The second () capture group contains \w*. This
# means find one or more word caracters. \w* is
# shorthand for [a-zA-Z0-9_].
The result or replacement portion has this meaning:
\u # Means to uppercase the following character.
\1 # Each () capture group is assigned a number
# from 1 to 9. \1 or back slash one says use what
# I captured in the first capture group.
\L # Means to lowercase all the following characters.
\2 # Use the second capture group
Result:
ROPER STATE PARK
Roper State Park
An alternate to the very magic mode:
: % s/\<\(.\)\(\w*\)/\u\1\L\2/g
# Each capture group requires a backslash to enable their meta
# character meaning i.e. "\(\)" verses "()".
回答3:
The Vim Tips Wiki has a TwiddleCase mapping that toggles the visual selection to lower case, UPPER CASE, and Title Case.
If you add the TwiddleCase
function to your .vimrc
, then you just visually select the desired text and press the tilde character ~
to cycle through each case.
回答4:
Try This regex ..
s/ \w/ \u&/g
回答5:
There is also the very useful vim-titlecase plugin for this.
来源:https://stackoverflow.com/questions/17440659/capitalize-first-letter-of-each-word-in-a-selection-using-vim