[debbugs-tracker] bug#28140: closed (Here is a possible bug in documentation for 4.4)

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Your message dated Sat, 28 Oct 2017 21:28:22 -0600
with message-id <address@hidden>
and subject line Re: bug#28140: Here is a possible bug in documentation for 4.4
has caused the debbugs.gnu.org bug report #28140,
regarding Here is a possible bug in documentation for 4.4
to be marked as done.

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28140: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=28140
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--- Begin Message --- Subject: Here is a possible bug in documentation for 4.4 Date: Fri, 18 Aug 2017 16:34:13 +0100

manual 4.4
section 7-8
 sed -E ':x {N ; s/\n/ /g ; s/(.{40,40})/\1\n/ ; /\n/!bx ; P ;D}'
does not work as described. Change line length , say to 5
  sed -E ':x {N ; s/\n/ /g ; s/(.{5,5})/\1\n/ ; /\n/!bx ; P ;D}' 
cat line_wrap_input :
apple grape
pear peach
pomengranate

~/sed/code-> sed -E ':x {N ; s/\n/ /g ; s/(.{5,5})/\1\n/ ; /\n/!bx ; P ; D}' \  line_wrap_input
apple
 grap
e pear peach pomengranate


~/sed/code->

This seems to work:

#!/bin/sed -rf
# line_wrap.sed (

:x
{
   N
   s/\n/ /g
   :y
   s_(.{40,40})_\1\n_
    /.{40,40}/  P
   s/.*\n//
   ty
   /\n/!bx
  
}

Best Wishes

David L Ward

--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#28140: Here is a possible bug in documentation for 4.4
>
>
>
>
> Date: 
>
> Sat, 28 Oct 2017 21:28:22 -0600
>
>
>
>
> User-agent: 
>
> Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0
>
>
>
>
> On 2017-10-12 12:31 AM, Assaf Gordon wrote:
> > > On 18/08/17 09:34 AM, bamber ward wrote:
> > > > manual 4.4
> > > > section 7-8
> > > >   sed -E ':x {N ; s/\n/ /g ; s/(.{40,40})/\1\n/ ; /\n/!bx ; P ;D}'
> > > > does not work as described.
> >
> > I'm thinking of the attached patch,
> > which replaces the overly terse (and incorrect) example
> > with a longer version with better comments.
>
> Push here:
>   https://git.savannah.gnu.org/cgit/sed.git/commit/?id=490b4997
>
> regards,
>  - assaf
>
>
> --- End Message ---