GNU bug report logs - #28140
Here is a possible bug in documentation for 4.4

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Package: sed;

Reported by: bamber ward <dlward134 <at> gmail.com>

Date: Fri, 18 Aug 2017 15:35:01 UTC

Severity: minor

Done: Assaf Gordon <assafgordon <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: bamber ward <dlward134 <at> gmail.com>
To: bug-sed <at> gnu.org
Subject: Here is a possible bug in documentation for 4.4
Date: Fri, 18 Aug 2017 16:34:13 +0100

[Message part 1 (text/plain, inline)]
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

[Message part 2 (text/html, inline)]
This bug report was last modified 7 years and 299 days ago.

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