Using Ctrl-A in Vim command line to increment a number
In normal mode (in Vim) if the cursor is on a number, hitting Ctrl-A increments the number by 1. Now I want to do the s开发者_开发技巧ame thing, but from the command line. Specifically, I want to go to certain lines whose first character is a number, and increment it, i.e., I want to run the following command:
:g/searchString/ Ctrl-A
I tried to store Ctrl-A in a macro (say a
), and using :g/searchString/ @a
, but I get an error:
E492: Not an editor command ^A
Any suggestions?
You have to use normal
to execute normal mode commands in command mode:
:g/searchString/ normal ^A
Note that you have to press Ctrl-VCtrl-A to get the ^A
character.
As well as the :g//normal
trick posted by CMS, if you need to do this with a more complicated search than just finding a number at the start of the line, you can do something like this:
:%s/^prefix pattern\zs\d\+\zepostfix pattern/\=(submatch(0)+1)
By way of explanation:
:%s/X/Y " Replace X with Y on all lines in a file
" Where X is a regexp:
^ " Start of line (optional)
prefix pattern " Exactly what it says: find this before the number
\zs " Make the match start here
\d\+ " One or more digits
\ze " Make the match end here
postfix pattern " Something to check for after the number (optional)
" Y is:
\= " Make the output the result of the following expression
(
submatch(0) " The complete match (which, because of \zs and \ze, is whatever was matched by \d\+)
+ 1 " Add one to the existing number
)
i am sure you can do that with vim on the command line. But here's an alternative,
$ cat file
one
2two
three
$ awk '/two/{x=substr($0,1,1);x++;$0=x substr($0,2)}1' file #search for "two" and increment
one
3two
three
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