[Bug 1340067] Re: Drop 20_add_alt_screen_toggle_ui.patch - it does nothing with vte3 >= 0.34.9

[Dmitry Shachnev]

That patch being useless is not a justification to do a stable release
update — it should fix an important bug.

And that patch no longer exists in the current development release
(vivid), so nothing is needed to do there.

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Title:
  Drop 20_add_alt_screen_toggle_ui.patch - it does nothing with vte3 >=
  0.34.9

Status in gnome-terminal package in Ubuntu:
  Confirmed

Bug description:
  On 2013-09-30, the alternate scroll mode has been implemented in vte3
  upstream [1]. In the same commit,
  vte_terminal_set_alternate_screen_scroll function has been added which
  does nothing and is there only for the compatibility with the
  previously patched Ubuntu's vte3 (the patch has been dropped in vte3
  0.34.9-1ubuntu1).

  Since this function now does nothing, Ubuntu's
  20_add_alt_screen_toggle_ui.patch for gnome-terminal does nothing too.
  It doesn't matter whether you turn the alt.scroll on or off in gnome-
  terminal's preferences window - the mouse scroll in console apps like
  man is ALWAYS turned on. Seems like it's always turned on in vte3 >=
  0.34.9 (again, see [1] for more info).

  So I propose to drop this 20_add_alt_screen_toggle_ui.patch since it's
  useless now.

  [1]
  https://git.gnome.org/browse/vte/commit/?id=9f8c1b88dcd880c2d9e78c93521ee755560a9275

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