diff3 man page on UNIXv7

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DIFF3(1)							      DIFF3(1)

NAME
       diff3 - 3-way differential file comparison

SYNOPSIS
       diff3 [ -ex3 ] file1 file2 file3

DESCRIPTION
       Diff3  compares	three  versions	 of  a file, and publishes disagreeing
       ranges of text flagged with these codes:

       ====	       all three files differ

       ====1	       file1 is different

       ====2	       file2 is different

       ====3	       file3 is different

       The type of change suffered in converting a given range of a given file
       to some other is indicated in one of these ways:

       f : n1 a	       Text  is to be appended after line number n1 in file f,
		       where f = 1, 2, or 3.

       f : n1 , n2 c   Text is to be changed in the range line n1 to line  n2.
		       If n1 = n2, the range may be abbreviated to n1.

       The  original contents of the range follows immediately after a c indi‐
       cation.	When the contents of two files are identical, the contents  of
       the lower-numbered file is suppressed.

       Under  the  -e  option, diff3 publishes a script for the editor ed that
       will incorporate into file1 all changes between file2 and  file3,  i.e.
       the  changes  that normally would be flagged ==== and ====3.  Option -x
       (-3) produces  a	 script	 to  incorporate  only	changes	 flagged  ====
       (====3).	  The  following  command  will	 apply the resulting script to
       `file1'.

		(cat script; echo ´1,$p´) ⎪ ed - file1

FILES
       /tmp/d3?????
       /usr/lib/diff3

SEE ALSO
       diff(1)

BUGS
       Text lines that consist of a single `.' will defeat -e.
       Files longer than 64K bytes won't work.

								      DIFF3(1)
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