script/backport-create-issue: handle long Redmine issue names #27887
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Redmine issue names have a maximum length of 255 characters. When we prepend,
e.g., "nautilus: " to a very long issue name, we can end up with a string that
is over 255 characters long. Such a string will be refused by Redmine:
ValidationError: Subject is too long (maximum is 255 characters)
This patch avoids such an eventuality by truncating the post-prepend string to
255 characters.
Signed-off-by: Nathan Cutler ncutler@suse.com