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Verifying log messages
======================

   Once you have entered a log message, you can evaluate that message
to check for specific content, such as a bug ID.  Use the `verifymsg'
file to specify a program that is used to verify the log message.  This
program could be a simple script that checks that the entered message
contains the required fields.

   The `verifymsg' file is often most useful together with the
`rcsinfo' file, which can be used to specify a log message template.

   Each line in the `verifymsg' file consists of a regular expression
and a command-line template.  The template must include a program name,
and can include any number of arguments.  The full path to the current
log message template file is appended to the template.

   One thing that should be noted is that the `ALL' keyword is not
supported.  If more than one matching line is found, the first one is
used.  This can be useful for specifying a default verification script
in a directory, and then overriding it in a subdirectory.

   If the repository name does not match any of the regular expressions
in this file, the `DEFAULT' line is used, if it is specified.

   If the verification script exits with a non-zero exit status, the
commit is aborted.

   Note that the verification script cannot change the log message; it
can merely accept it or reject it.

   The following is a little silly example of a `verifymsg' file,
together with the corresponding `rcsinfo' file, the log message
template and an verification  script.  We begin with the log message
template.  We want to always record a bug-id number on the first line
of the log message.  The rest of log message is free text.  The
following template is found in the file `/usr/cvssupport/tc.template'.

     BugId:

   The script `/usr/cvssupport/bugid.verify' is used to evaluate the
log message.

     #!/bin/sh
     #
     #       bugid.verify filename
     #
     #  Verify that the log message contains a valid bugid
     #  on the first line.
     #
     if head -1 < $1 | grep '^BugId:[ ]*[0-9][0-9]*$' > /dev/null; then
         exit 0
     else
         echo "No BugId found."
         exit 1
     fi

   The `verifymsg' file contains this line:

     ^tc     /usr/cvssupport/bugid.verify

   The `rcsinfo' file contains this line:

     ^tc     /usr/cvssupport/tc.template