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Re: How to replace with `$1` literally?
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From: |
Marc Chantreux |
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Subject: |
Re: How to replace with `$1` literally? |
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Date: |
Mon, 8 Aug 2016 13:17:31 +0200 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
hello,
> The thing to replace ENV might be read from a file.
> m4 -D ENV=$(< file) << ENV
it is a good practice to quote substitutions to avoid
unexpected behaviors.
risky : m4 -D ENV=$(< file) << ENV
better: m4 -D ENV="$(< file)" << ENV
> How to escape the content of file so that the content of file will be used
> to replace ENV literally?
AFAIK: you can't. but i'm really an m4 rookie and i'm pretty sure some
else will come to rescue.
regards
marc