cl.el breaks 'member

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Article #99391

#99391

From: Mike Williams
Date: Tue, 18 Sep 1990 20:09

23 lines
1569 bytes

  I was quite surprised when I loaded Jamie Zawinski's tar-mode, and
  discovered that some of my carefully crafted hacks no longer worked.  In
  particular, anything which used 'member started behaving differently.  I
  tracked down the problem to cl.el, which *redefines* 'member, to give
  basically the same functionality as 'memq. (tar-mode.el requires cl.el). 

  For example:

  (member "abc" '("abc")) ==> ("abc")
  (require 'cl)
  (member "abc" '("abc")) ==> nil

    Why is 'member redefined??  How can I protect my favourite
  customisations from becoming completely weirded out by basic functions
  changing beneath my feet?  Should I define my own version of 'member??

  P.S.  Sorry if I'm covering old ground here ...

--
      /-------------------- byrd@comp.vuw.ac.nz --------------------\ 
      | Mike Williams, Victoria University of Wellington, Aotearoa. |
      \------------ What's another word for Thesaurus? -------------/

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From: Mike.Williams@comp.vuw.ac.nz (Mike Williams)
Newsgroups: gnu.emacs.bug
Subject: cl.el breaks 'member
Message-ID: <BYRD.90Sep18160907@embassy.comp.vuw.ac.nz>
Date: 18 Sep 90 20:09:07 GMT
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Organization: Dept. of Computer Science, Victoria Uni. of Wellington, NZ.
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Posted: Tue Sep 18 21:09:07 1990