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README revision 1.4 
      1  1.4  alm ed is an 8-bit-clean, POSIX-compliant line editor.  It should work with
      2  1.4  alm any regular expression package that conforms to the POSIX interface
      3  1.4  alm standard, such as GNU regex(3).
      4  1.1  cgd 
      5  1.1  cgd The following compiler directives are recognized:
      6  1.1  cgd GNU_REGEX	- use with GNU regex(3)
      7  1.1  cgd DES		- use to add encryption support (requires crypt(3))
      8  1.1  cgd NO_REALLOC_NULL	- use if realloc(3) does not accept a NULL pointer
      9  1.4  alm BACKWARDS	- use for backwards compatibility
     10  1.1  cgd 
     11  1.2  alm The file `POSIX' describes extensions to and deviations from the POSIX
     12  1.2  alm standard.
     13  1.1  cgd 
     14  1.1  cgd The ./test directory contains regression tests for ed. The README
     15  1.1  cgd file in that directory explains how to run these.
     16  1.1  cgd 
     17  1.2  alm For a description of the ed algorithm, see Kernighan and Plauger's book
     18  1.1  cgd "Software Tools in Pascal," Addison-Wesley, 1981.
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