[Bug 1910114] Re: bash-completion doesn't expand all possible okular filetypes

[Martin Weis]

complete -f -X
'!*.@(okular|@(?(e|x)ps|?(E|X)PS|[pf]df|[PF]DF|dvi|DVI|cb[rz7]|CB[RZ7]|djv?(u)|DJV?(U)|gif|jp?(e)g|miff|tif?(f)|pn[gm]|p[bgp]m|bmp|xpm|ico|xwd|tga|pcx|GIF|JP?(E)G|MIFF|TIF?(F)|PN[GM]|P[BGP]M|BMP|XPM|ICO|XWD|TGA|PCX|epub|EPUB|odt|ODT|fb?(2)|FB?(2)|mobi|MOBI|g3|G3|chm|CHM|md?(o)?(w)?(n)|.m?(ark)dt?(e)xt)?(.?(gz|GZ|bz2|BZ2|xz|XZ)))'
okular

seems to do the trick (rz7 included and doubled dvi removed).

```
mkdir /tmp/okulartest/
touch /tmp/okulartest/file.{md,mkd,mdwn,mdown,mdtxt,mdtext,markdown}
```

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https://bugs.launchpad.net/bugs/1910114

Title:
  bash-completion doesn't expand all possible okular filetypes

Status in bash-completion package in Ubuntu:
  New

Bug description:
  Since 2019, `okular` has gained the capability to open 7-zip
  compressed comic book archives with the extension of .cb7 | .CB7 .

  `bash-completion` is not keeping track.

  Proposal: Change the okular install_xspec line in `/usr/share/bash-
  completion/bash_completion` to

  _install_xspec
  '!*.@(okular|@(?(e|x)ps|?(E|X)PS|[pf]df|[PF]DF|dvi|DVI|cb[rz7]|CB[RZ7]|djv?(u)|DJV?(U)|dvi|DVI|gif|jp?(e)g|miff|tif?(f)|pn[gm]|p[bgp]m|bmp|xpm|ico|xwd|tga|pcx|GIF|JP?(E)G|MIFF|TIF?(F)|PN[GM]|P[BGP]M|BMP|XPM|ICO|XWD|TGA|PCX|epub|EPUB|odt|ODT|fb?(2)|FB?(2)|mobi|MOBI|g3|G3|chm|CHM)?(.?(gz|GZ|bz2|BZ2|xz|XZ)))'
  okular

  changing essentially from ...cb[rz]|CB[rz]... to ...cb[rz7]|CB[RZ7]...
  .

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