diffmk(1) - osol9

1diffmk(1)                        User Commands                       diffmk(1)
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NAME

6       diffmk - mark differences between versions of a troff input file
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SYNOPSIS

9       diffmk oldfile newfile markedfile
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DESCRIPTION

13       diffmk compares two versions of a file and creates a third version that
14       includes "change mark" (.mc) commands for nroff(1) and  troff(1).  old‐
15       file  and newfile are the old and new versions of the file. diffmk gen‐
16       erates markedfile, which, contains the text from newfile with  troff(1)
17       "change mark" requests (.mc) inserted where  newfile differs from  old‐
18       file. When markedfile is formatted, changed or inserted text  is  shown
19       by  | at the right margin of each line. The position of deleted text is
20       shown by a single *.
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USAGE

23       See largefile(5) for the description of the  behavior  of  diffmk  when
24       encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
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EXAMPLES

27       Example 1 An example of the diffmk command.
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30       diffmk  can also be used in conjunction with the proper  troff requests
31       to produce program listings with marked changes. In the following  com‐
32       mand line:
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35         example% diffmk old.c new.c marked.c ; nroff reqs marked.c | pr
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40       the file reqs contains the following troff requests:
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43         .pl 1
44         .ll 77
45         .nf
46         .eo
47         .nh
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52       which  eliminate page breaks, adjust the line length, set no-fill mode,
53       ignore escape characters, and turn off hyphenation, respectively.
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57       If the characters  | and * are inappropriate, you might run  markedfile
58       through  sed(1) to globally change them.
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ATTRIBUTES

62       See attributes(5) for descriptions of the following attributes:
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67       ┌─────────────────────────────┬─────────────────────────────┐
68       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
69       ├─────────────────────────────┼─────────────────────────────┤
70       │Availability                 │SUNWdoc                      │
71       └─────────────────────────────┴─────────────────────────────┘
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BUGS

77       Aesthetic  considerations may dictate manual adjustment of some output.
78       File differences involving only formatting requests may  produce  unde‐
79       sirable  output, that is, replacing .sp by .sp 2 will produce a "change
80       mark" on the preceding or following line of output.
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84SunOS 5.11                        14 Sep 1992                        diffmk(1)