Only print the progress message if on a TTY
authorCatalin Marinas <catalin.marinas@gmail.com>
Tue, 5 Dec 2006 22:07:22 +0000 (22:07 +0000)
committerCatalin Marinas <catalin.marinas@gmail.com>
Tue, 5 Dec 2006 22:07:22 +0000 (22:07 +0000)
The "Checking for changes..." message should only be printed if stdout
is a TTY to avoid unnecessary information for people redirecting the
output to a file.

Signed-off-by: Catalin Marinas <catalin.marinas@gmail.com>

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