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Allow no-append in clipboard_control
If no-append is present in clipboard_control, this will disable kitty's OSC 52 extension of concatenating to the clipboard. See #995
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@ -219,3 +219,7 @@ first, for example::
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<ESC>]52;c;!<ESC>\
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Here ``!`` is not valid base64 encoded text, so it clears the clipboard.
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In case you're using software that can't be easily adapted to this
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protocol extension, it can be disabled by specifying ``no-append`` to the
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:opt:`clipboard_control` setting.
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@ -798,8 +798,10 @@ def startup_session(x):
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o('clipboard_control', 'write-clipboard write-primary', option_type=lambda x: frozenset(x.lower().split()), long_text=_('''
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Allow programs running in kitty to read and write from the clipboard. You can
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control exactly which actions are allowed. The set of possible actions is:
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write-clipboard read-clipboard write-primary read-primary
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The default is to allow writing to the clipboard and primary selection. Note
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write-clipboard read-clipboard write-primary read-primary. You can
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additionally specify no-append to disable kitty's protocol extension
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for clipboard concatenation. The default is to allow writing to the
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clipboard and primary selection with concatenation enabled. Note
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that enabling the read functionality is a security risk as it means that any
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program, even one running on a remote server via SSH can read your clipboard.
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'''))
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@ -429,7 +429,8 @@ def clipboard_control(self, data):
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def write(key, func):
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if text:
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if len(self.clipboard_control_buffers[key]) > 1024*1024:
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if ('no-append' in self.opts.clipboard_control or
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len(self.clipboard_control_buffers[key]) > 1024*1024):
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self.clipboard_control_buffers[key] = ''
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self.clipboard_control_buffers[key] += text
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else:
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