RE: problem using call-process with grep

[Drew Adams]

    When I run grep 'epsilon\($\)' foo
    from the shell, it finds a match. What does your grep do?

I said:

  And if I run grep from the Cygwin command line (with either
  parenthetical regexp - single or double backslashes), it
  works OK. I only have the problem when I use `call-process'.

By command line, I meant shell (bash from Cygwin). (I showed the regexp with
double-quotes, but single-quotes work too.)

Summary: grep works with that regexp when run from the shell or when using
the Emacs `grep' command. The only problem is with `call-process'.