[Bug 1753724] [NEW] nano fails to redo a file insertion

[Benno Schulenberg]

Public bug reported:

In Bionic Beaver (and in any nano between 2.8.0 and 2.9.3), trying to
redo a file insertion can fail with the message: "[ Gone undo line --
please report a bug ]".

To reproduce, run 'nano --ignore' and type:  Ctrl+R  /etc/issue  <Enter>
Alt+U  Alt+E

Attached upstream patch fixes the issue.

References:
  https://savannah.gnu.org/bugs/?53272
  http://git.savannah.gnu.org/cgit/nano.git/commit/?id=e9eabdcd
  http://lists.gnu.org/archive/html/nano-devel/2018-03/msg00015.html

** Affects: nano (Ubuntu)
     Importance: Undecided
         Status: New

** Patch added: "0001-undo-when-redoing-don-t-try-to-find-a-line-number-th.patch"
   https://bugs.launchpad.net/bugs/1753724/+attachment/5070577/+files/0001-undo-when-redoing-don-t-try-to-find-a-line-number-th.patch

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https://bugs.launchpad.net/bugs/1753724

Title:
  nano fails to redo a file insertion

Status in nano package in Ubuntu:
  New

Bug description:
  In Bionic Beaver (and in any nano between 2.8.0 and 2.9.3), trying to
  redo a file insertion can fail with the message: "[ Gone undo line --
  please report a bug ]".

  To reproduce, run 'nano --ignore' and type:  Ctrl+R  /etc/issue
  <Enter>  Alt+U  Alt+E

  Attached upstream patch fixes the issue.

  References:
    https://savannah.gnu.org/bugs/?53272
    http://git.savannah.gnu.org/cgit/nano.git/commit/?id=e9eabdcd
    http://lists.gnu.org/archive/html/nano-devel/2018-03/msg00015.html

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