diffmk

 

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 User Commands                                           diffmk(1)
 
 
 


NAME
      diffmk - mark differences between versions of a troff  input
      file
 


SYNOPSIS
      diffmk oldfile  newfile  markedfile
 


DESCRIPTION
      diffmk compares two versions of a file and creates  a  third
      version  that  includes  "change  mark"  (.mc)  commands for
      nroff(1) and  troff(1). oldfile and newfile are the old  and
      new  versions  of  the  file.  diffmk  generates markedfile,
      which, contains the text from newfile with  troff(1) "change
      mark"  requests  (.mc)  inserted where  newfile differs from
      oldfile. When markedfile is formatted, changed  or  inserted
      text  is  shown  by  | at the right margin of each line. The
      position of deleted text is shown by a single *.
 
 USAGE
      See largefile(5) for the  description  of  the  behavior  of
      diffmk  when  encountering  files greater than or equal to 2
      Gbyte ( 2**31 bytes).
 
 EXAMPLES
      Example 1: An example of the diffmk command.
 
      diffmk can also be  used  in  conjunction  with  the  proper
      troff  requests  to  produce  program  listings  with marked
      changes. In the following command line:
 
      example% diffmk old.c new.c marked.c ; nroff reqs marked.c | pr
 
      the file reqs contains the following troff requests:
 
      .pl 1
      .ll 77
      .nf
      .eo
      .nh
 
      which eliminate page breaks, adjust  the  line  length,  set
      no-fill  mode, ignore escape characters, and turn off hyphe-
      nation, respectively.
 
      If the characters  | and * are inappropriate, you might  run
      markedfile through  sed(1) to globally change them.
 


ATTRIBUTES
      See attributes(5) for descriptions of the  following  attri-
      butes:
 
 
 
 
 
 SunOS 5.8           Last change: 14 Sep 1992                    1
 
 
 
 
 
 
 User Commands                                           diffmk(1)
 
 
 
      ____________________________________________________________
     |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
     |_____________________________|_____________________________|
     | Availability                | SUNWdoc                     |
     |_____________________________|_____________________________|
 
 


SEE ALSO
      diff(1), nroff(1), sed(1), troff(1),  attributes(5),  large-
      file(5)
 
 BUGS
      Aesthetic considerations may dictate  manual  adjustment  of
      some  output.  File  differences  involving  only formatting
      requests may produce undesirable output, that is,  replacing
      .sp  by  .sp 2 will produce a "change mark" on the preceding
      or following line of output.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SunOS 5.8           Last change: 14 Sep 1992                    2
 
 
 

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