Don't abort when backup files already exist. Don't allow alternative names.
Rationale:
- When the user wants to revert, he shouldn't be stopped from doing
this just because some old backups will be overwritten.
- To not clobber important files by accident, alternative names for backup
files were disabled. As the backup target now has a fixed name, the user
doesn't have to be informed about the backup copy (unless --verbose)
changeset = 'changeset: {rev}:{node|short}\n{tags}{short_parents}user: {author}\ndate: {date|date}\nsummary: {desc|firstline}\n\n'
changeset_quiet = '{rev}:{node|short}\n'
changeset_verbose = 'changeset: {rev}:{node}\n{tags}{parents}{manifest}user: {author}\ndate: {date|date}\nfiles: {files}\n{file_adds}{file_dels}description:\n{desc|strip}\n\n\n'
start_file_adds = 'files+: '
file_add = ' {file_add}'
end_file_adds = '\n'
start_file_dels = 'files-: '
file_del = ' {file_del}'
end_file_dels = '\n'
short_parent = 'parent: {rev}:{node|short}\n'
parent = 'parent: {rev}:{node}\n'
manifest = 'manifest: {rev}:{node}\n'
tag = 'tag: {tag}\n'