Re: Is there a simple way to |^a| and |^x| ?

On 2017-06-05 19:37, Erik Christiansen wrote:
> Both ^a and ^x have proven very useful in a variety of scenarios.
> Now, while editing some postscript, I sometimes have to decrement
> the magnitude of a series of literal constants by a common amount,
> and if there were mod variants of ^a and ^x, I'd be able to hit '.'
> on them all, instead of having to ferret out the positive ones,
> then go back for the negative, with all the scope for error which
> that entails.

While a side-stepping of your literal request, you can do
incrementing/decrementing in search replacements.

For all numbers in a range:

:'<,'>s/-\=\d\+/\=submatch(0)+22/g

to add 22 to all numbers in that range of lines. If you need more
context-aware targeting, you can use "\zs" and "\ze":

:'<,'>s/property=\zs-\=\d\+/\=submatch(0)+22/g

to only increment "property=###" by 22.

You can use any valid vim expression to the right of that
"\=" (though with a caveat regarding division, in which case I
recommend alternate delimiters:

:'<,'>s@-\=\d\+@\=(submatch(0)+22)/17@g

so that the "/" isn't seen as a delimiter for the :s command).

-tim



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