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 same thing, but from the command line. Specifically, I want to go to certain lines whose first character is a number, and increment it, ie, 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 patternzsd+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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