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E-book viewer: Add a command line flag --new-instance to force the viewer to open a new window even if the option to always use a single viewer window is set. Fixes #2038760 [Enhancement Request: Parameter to open second instance of viewer](https://bugs.launchpad.net/calibre/+bug/2038760)

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Kovid Goyal 2023-10-16 18:04:30 +05:30
parent 9d3fdf2214
commit ac0ae71ae8
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1 changed files with 3 additions and 1 deletions
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src/calibre/gui2/viewer/main.py
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@ -137,6 +137,8 @@ View an e-book.
))
a('--continue', default=False, action='store_true', dest='continue_reading',
help=_('Continue reading the last opened book'))
a('--new-instance', default=False, action='store_true', help=_(
'Open a new viewer window even when the option to use only a single viewer window is set'))
setup_gui_option_parser(parser)
return parser
@ -204,7 +206,7 @@ def main(args=sys.argv):
oat.startswith('epubcfi(/') or is_float(oat) or oat.startswith('ref:') or oat.startswith('search:') or oat.startswith('regex:')):
raise SystemExit(f'Not a valid --open-at value: {opts.open_at}')
if get_session_pref('singleinstance', False):
if not opts.new_instance and get_session_pref('singleinstance', False):
from calibre.gui2.listener import Listener
from calibre.utils.lock import SingleInstance
with SingleInstance(singleinstance_name) as si: