Vim: Convert Upper to Lowercase - Editors

awayinlondon@googlemail.com <awayinlondon@googlemail.com> wrote:
> I'm trying to convert the case in certain lines in vi, but the search
> pattern I'm trying is not working!
>
> For example:
>
>:%s/[A-Z]/[a-z]/g
>
> converts "The Quick Dog" to "[a-z]he [a-z]uick [a-z]og" ....

That can't work. The rhs is take as a string, not as a pattern. To
make text lowercase use ``gu'' or ``gugu''

:h gu
:h gugu

or for uppercase

:h gU
:h gUgU

> Thanks!

HTH
../otto

awayinlondon@googlemail.com wrote:

> I'm trying to convert the case in certain lines in vi, but the search
> pattern I'm trying is not working!

> For example:

>:%s/[A-Z]/[a-z]/g

> converts "The Quick Dog" to "[a-z]he [a-z]uick [a-z]og" ....

> Not exactly the outcome I was hoping for :-)

But you asked for it :-)

> Is there anyway to do this within vi without resorting to a commandline
> sed/tr ?

You could use the special \L combonation to indicate that the following
character must be made lower case:

:%s/[A-Z]/\L&/g

Here you match any character in [A-Z]. The replacement string is then \L
followed by &, which is short for what was matched in the left hand
side.

Peppe
--
se nocp cpo=BceFsx!$ hid bs=2 ls=2 hls ic " P. Guldberg /bin/vi@wielders.org
se scs ai isf-== fdo-=block cino=t0,:0 hi=100 ru so=4 noea lz|if has('unix')
se sh=/bin/sh|en|syn on|filetype plugin indent on|ono S V/\n^-- $\\|\%$/<CR>
cno <C-A> <C-B>|au FileType vim,mail se sw=4 sts=4 et|let&tw=72+6*(&ft=~'v')

Preben 'Peppe' Guldberg </bin/vi@wielders.org> wrote:
> You could use the special \L combonation to indicate that the following
> character must be made lower case:
>
> :%s/[A-Z]/\L&/g
>
> Here you match any character in [A-Z]. The replacement string is then \L
> followed by &, which is short for what was matched in the left hand
> side.

Oh yes, how could I forget about this. I think it's too hot in the
office and I should go home

> Peppe

../otto

awayinlondon@googlemail.com scripsit:
>
>:%s/[A-Z]/[a-z]/g
>
> converts "The Quick Dog" to "[a-z]he [a-z]uick [a-z]og" ....
>

In Vim:

%s/[A-Z]/\l\0/g

m.
--
LaTeX + Vim = http://vim-latex.sourceforge.net/
Vim Universal Templates: http://vim.sf.net/script.php?script_id=1078
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CLEWN - http://clewn.sf.net

This info is just what I needed, thanks folks.

I'm thinking somebody might want to replace words or identifiers in some particular context, maybe all occurrences of foo.BAR with foo.bar and FOO.BAR with FOO.bar (but not foo.bar) for example:

%s/\.[A-Z_]\+/\L&/g

the point is the LHS doesn't have to only match one char, and the \L& will still change whatever was matched to lower case, in this case only if the identifier is preceded by a period, and it won't mess with the _.

-George