Escaping of line breaks for text replacement

From	Markus Elfring <Markus.Elfring@web.de>
Newsgroups	comp.unix.programmer, comp.programming
Subject	Escaping of line breaks for text replacement
Date	2014-03-02 14:00 +0100
Message-ID	<bngoc5F196mU1@mid.individual.net> (permalink)

Cross-posted to 2 groups.

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Hello,

I get the following result if I try out such a command on my openSUSE system.

elfring@Sonne:~> $SHELL --version && sed --version && LINE='echo ---' && $LINE \
&& DRAFT='template1.txt' && cat $DRAFT && $LINE \
&& INPUT='replacement1.txt' && cat $INPUT && XY=$(< $INPUT) && $LINE \
&& LANG=C sed "s/# placeholder/$XY/" $DRAFT
GNU bash, Version 4.2.45(1)-release (x86_64-suse-linux-gnu)
   ...
sed (GNU sed) 4.2.2
   ...
---
+++++++++++++
# placeholder
*************
---
ABC
XYZ
---
sed: -e expression #1, char 19: unterminated `s' command


I guess that the shown error message is an indication that I should add a bit of
escaping to the content of the variable "XY" which I inserted previously. I have
tried to achieve this with shell pattern substitution.

elfring@Sonne:~> XY=$(< $INPUT) && XY=${XY//\\\n/./} && echo $XY
ABC XYZ


I wonder why I do not get this approach to work so far with some additional
backslashes here. How should newlines be escaped for this purpose?

Would you like to share any further ideas?

Regards,
Markus

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Thread

Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-02 14:00 +0100
  Re: Escaping of line breaks for text replacement jt@toerring.de (Jens Thoms Toerring) - 2014-03-02 15:49 +0000
    Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-03 08:38 +0100
  Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-02 16:52 +0000
    Re: Escaping of line breaks for text replacement Kaz Kylheku <kaz@kylheku.com> - 2014-03-02 17:53 +0000
      Re: Escaping of line breaks for text replacement Kaz Kylheku <kaz@kylheku.com> - 2014-03-02 20:27 +0000
        Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-03 16:17 +0000
          Re: Escaping of line breaks for text replacement Kaz Kylheku <kaz@kylheku.com> - 2014-03-03 17:44 +0000
            Re: Escaping of line breaks for text replacement Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2014-03-04 13:30 +0000
    Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-02 20:50 +0100
      Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-03 16:52 +0000
    Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-03 09:24 +0100
    Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-03 12:55 +0100
      Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-03 17:02 +0000
        Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-06 12:02 +0100
          Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-06 18:51 +0000
            Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-06 20:48 +0100
              Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-06 22:59 +0000
                Re: Escaping of line breaks for text replacement Kaz Kylheku <kaz@kylheku.com> - 2014-03-07 06:38 +0000
                Re: Escaping of line breaks for text replacement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-03-07 13:33 +0000
                Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-07 15:08 +0000
                Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-07 11:23 +0100
                Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-07 14:43 +0000
                Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-07 17:23 +0100
                Re: Escaping of line breaks for text replacement dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-07 19:53 +0000
                Bash 4.3.0 escape expansion (was: Re: Escaping of line breaks for text replacement) dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-08 12:26 +0000
                Re: Bash 4.3.0 escape expansion (was: Re: Escaping of line breaks for text replacement) Kaz Kylheku <kaz@kylheku.com> - 2014-03-08 20:05 +0000
                Re: Bash 4.3.0 escape expansion Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-03-09 03:48 +0000
                Re: Bash 4.3.0 escape expansion dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-09 13:21 +0000
  Re: Escaping of line breaks for text replacement Kaz Kylheku <kaz@kylheku.com> - 2014-03-02 18:11 +0000
    Re: Escaping of line breaks for text replacement Markus Elfring <Markus.Elfring@web.de> - 2014-03-02 20:08 +0100
      Re: Escaping of line breaks for text replacement Kaz Kylheku <kaz@kylheku.com> - 2014-03-02 20:35 +0000
        Re: Which content should be escaped? Markus Elfring <Markus.Elfring@web.de> - 2014-03-03 10:30 +0100
          Re: Which content should be escaped? dave.gma+news002@googlemail.com.invalid (Dave Sines) - 2014-03-04 14:04 +0000
            Re: Which content should be escaped? Kaz Kylheku <kaz@kylheku.com> - 2014-03-04 17:32 +0000
  Re: Escaping of line breaks for text replacement Siri Cruz <chine.bleu@yahoo.com> - 2014-03-07 02:47 -0800

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