Reply to message «Re: lazyredraw for encoding change?», sent 02:05:14 21 March 2011, Monday by [email protected]:
> I wonder if I'm doing the "mappings" table correctly. Does this look right?
>
> map(range(128,255), 'iconv(nr2char(v:val),&enc,"latin1")')
No, it don't. You should use
map(range(128, 255), 'eval(printf(''"\x%2x"'', v:val))')
Because `nr2char()` converts to unicode character, but you want to use bytes.
> If I switched from "utf-8" to "latin1", then everything works perfect. It
> has something to do with the encoding mode.
It won't work perfect if you forget to change it back and then run into a
plugin
that uses some unicode strings or edit some not-only-ASCII text. When you set
'encoding' to "latin1" you make all strings that contain unicode characters
that
vim or some plugins use mean the other thing. And quote from help:
> It should normally be kept at its default value, or set when Vim
> starts up. See |multibyte|.
In `:h multibyte' it is explained why it should be so.
Original message:
> ZyX,
>
> Thanks. I don't want to use option (1) for performance reasons. Option (2)
> almost worked; however, it fails to replace some characters.
>
> I wonder if I'm doing the "mappings" table correctly. Does this look right?
>
> map(range(128,255), 'iconv(nr2char(v:val),&enc,"latin1")')
>
> The character sequences that are not replaced start with these characters.
> Should these be escaped?
>
> dec: 221, <M-]>
> dec: 193, <M-A>
> dec: 215, <M-Z>
> ...
>
> If I switched from "utf-8" to "latin1", then everything works perfect. It
> has something to do with the encoding mode.
>
> Thanks again!
>
> On Sun, Mar 20, 2011 at 2:38 PM, ZyX <[email protected]> wrote:
> > Reply to message «Re: lazyredraw for encoding change?»,
> > sent 00:23:41 21 March 2011, Monday
> >
> > by [email protected]:
> > > I need to map each character to specific strings, for which I have a
> > > dictionary (mappings below) for each character 128-255. For example,
> > > <97> maps to "AA". I use the substitute() function along with submatch
> > > to do that.
> >
> > I would have used something like this:
> > let i=0
> > let slen=len(str)
> > let r=""
> > while i<slen
> >
> > let c=char2nr(str[i])
> > if c>128
> >
> > let r.=mappings[str[i]]
> >
> > else
> >
> > let r.=str[i]
> >
> > endif
> > let i+=1
> >
> > endwhile
> >
> > Though I tested another option and it works:
> > echo substitute(str, "[\x7F-\xFF]", '\=mappings[submatch(0)]', "g")
> >
> > Note the single quotes around {pattern}: it will force pattern to contain
> > specific bites, not unicode characters.
> >
> > Original message:
> > > Hi ZyX,
> > >
> > > Here is a specific example:
> > >
> > > I have a string that has 8-bits characters in the 128-255 range
> > >
> > > :let a ="<97><9e>·<97>¢<96><9b>Ü<88>å<82>ÌÂ<98>Ð0"
> > >
> > > I need to map each character to specific strings, for which I have a
> > > dictionary (mappings below) for each character 128-255. For example,
> > > <97> maps to "AA". I use the substitute() function along with submatch
> > > to do that.
> > >
> > > let retval = substitute(value, '\([\d128-\d255]\)',
> > > '\=mappings[submatch(1)]', "g")
> > >
> > > It appears to me that substitute() seems to be running based off the
> > > current encoding setting, even if I converted all the rest to "latin1"
> > > using iconv() functions.
> > >
> > >
> > > Thanks for any help!
> > >
> > > On Sun, Mar 20, 2011 at 1:54 PM, ZyX <[email protected]> wrote:
> > > > Reply to message «lazyredraw for encoding change?»,
> > > > sent 23:18:31 20 March 2011, Sunday
> > > > by [email protected]:
> > > >
> > > > What do you switch? 'encoding'? You are not supposed to do this ever,
> >
> > why
> >
> > > > don't
> > > > you use `iconv()', `scriptencoding utf-8', 'fileencoding', `e ++enc'
> > > > or some
> > > > other stuff depending on what you actually do in your script. Can you
> > > > provide
> > > > more specific example?
> > > >
> > > > Original message:
> > > > > Hello All,
> > > > >
> > > > > I have a script which needs to manipulate strings in 8-bit
> >
> > characters.
> >
> > > > So,
> > > >
> > > > > I switch between the current encoding and the 8-bit encoding.
> >
> > However,
> >
> > > > the
> > > >
> > > > > screen redraws during the change of encoding. Is there a way to
> > > > > suppress it?
> > > > >
> > > > > Thanks!
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