use Perl

• From an old elisp hacker... (Score:2)

  by merlyn (47)

  You already have "EMACS=t" in the environment, so you don't need an extra variable to do that.

  If you want to temporarily get rid of that, setenv does a lot more than you need, including pushing your temp changes into setenv-history. Look at localizing the process-environment variable, and simply modifying it to a new value. For example (slightly untested):

  (let ((process-environment (cons "FOO=bar" process-environment)))
    ... your code ...
  )

  --
  

  • Randal L. Schwartz
  • Stonehenge
  • Re:From an old elisp hacker... (Score:2)

    by TorgoX (1933) <sburkeNO@SPAMcpan.org> on 2005.11.19 7:12 (#44655) Homepage Journal

    You already have "EMACS=t" in the environment,

    I don't see that when I shell-command "printenv" or do (getenv "EMACS"). Are you using Xemacs? I'm using GNU Emacs 21.3.1.

    That's a handy trick with localizing process-environment tho!

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    Parent

    • Re:From an old elisp hacker... (Score:2)

      by merlyn (47)

      EMACS=t is apparently only when I start a shell. Must be a function of shell mode. (Time passes.) Oh, it's defined in comint-exec-1. There's a good example of manipulating a local process-environment there too! Bonus!

      --
      

      • Randal L. Schwartz
      • Stonehenge