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From: Raffaele Ricciardi <rfflrccrd@gmail.com>
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Subject: Re: Examining the output of a shell command?
Date: Sun, 28 Jun 2015 16:31:29 +0200
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On 28/06/15 15:57, Pascal J. Bourguignon wrote:
> (shell-command-to-string "echo $RED hello $NORMAL")
> --> "[31m hello [0m
> "

Here is:

(shell-command-to-string "echo $RED hello $NORMAL")
--> "hello
"

Tried with GNU Emacs 24.5.1:
  - `emacs -Q` (started from a shell where $RED and $NORMAL are defined)
  - M-: (shell-command-to-string "echo $RED hello $NORMAL") RET

Tried with `emacs -nw -Q`, too, in case was a GUI problem.