To compare the differences between two versions, I used to do:

cvs -y -r v1 -r v2 >out.txt 2>&1

This is missing a command which, from the context of the question, looks like cvs diff.

In that case you could use the -t option to expand tabs: 

    cvs diff -y -t -r rev1 -r rev2

[download]

You can also use -b option to ignore changes in whitespace and -B to ignore blank lines. For details on the options see: 

    cvs diff --help

[download]

In particular you may find the --suppress-common-lines option useful. The following will do most of the hard work of your program: 

    cvs diff -y --suppress-common-lines -t -r rev1 -r rev2

    # Or just

    cvs diff -y --sup -t -r rev1 -r rev2

[download]

Also, in your code you do not check to see if your second open succeeds. I wouldn't normally comment on something like that expect that it seems to contradict your statement above:

1. Exception handling has to be there.

--
John.

In reply to Re: extract useful infos from cvs diff output by jmcnamara
in thread extract useful infos from cvs diff output by pg

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