[Vim arg list and Search Replacement]

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Tags: #vim #search #replace #args #case #lower #upper

Vim arg list and Search Replacement.md

Imagine we have a file containing…

from foo import Bar

We want Bar to be bar.

We could do that across all files like so:

:args
:args **/*.py
:argdo %s/\v(from foo import )B(ar)/\1b\2/e | update

e flag tells Vim to ignore any errors

Alternatively instead of hardcoding the lowercase b we could have done this dynamically using either \l which lowercases the first character inside of a backreference or \L which lowercases the entire backreference (Reference).

Examples…

:argdo %s/\v(from foo import Bar)/\L\1/e | update
:argdo %s/\vfrom foo import (B)ar/\l\1/e | update
:argdo %s/\vfrom foo import (*+)/\l\1/e | update