[Bug 1851235] Re: Tig crashes when searching if used as git pager

[Brian Murray]

** Bug watch added: Debian Bug tracker #944123
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944123

** Also affects: tig (Debian) via
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944123
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/1851235

Title:
  Tig crashes when searching if used as git pager

Status in tig package in Ubuntu:
  New
Status in tig package in Debian:
  Unknown

Bug description:
  export GIT_PAGER="tig"
  git log

  or just

  git log | tig

  Then, write '/' and hit enter, tig will crash.

  This is the backtrace when launching it as

  git log | gdb -ex r -ex "set logging on" -ex "bt full" -ex quit --args
  tig

  So it looks like more a readline issue

  #0  0x00007ffff7f84a20 in _rl_update_final () at ./display.c:2972
          full_lines = 0
          woff = 0
          botline_length = <optimized out>
  #1  0x00007ffff7f8b695 in rl_newline (count=<optimized out>, key=<optimized out>) at ./text.c:1105
  No locals.
  #2  0x00007ffff7f6d707 in _rl_dispatch_subseq (key=13, map=<optimized out>, got_subseq=<optimized out>) at ./readline.c:852
          r = 0
          newkey = <optimized out>
          macro = <optimized out>
          func = 0x7ffff7f8b5d0 <rl_newline>
          cxt = <optimized out>
  #3  0x00007ffff7f6dbf5 in _rl_dispatch (key=<optimized out>, map=<optimized out>) at ./readline.c:798
  No locals.
  #4  0x00007ffff7f6dcc5 in readline_internal_char () at ./readline.c:632
          lastc = 13
          eof_found = <optimized out>
          c = <optimized out>
          code = <optimized out>
          lk = 0
          r = <optimized out>
  #5  0x00007ffff7f6e4ed in readline_internal_charloop () at ./readline.c:659
          eof = 1
  --Type <RET> for more, q to quit, c to continue without paging--        eof = <optimized out>
  #6  readline_internal () at ./readline.c:671
  No locals.
  #7  readline (prompt=prompt at entry=0x5555555928da "/") at ./readline.c:377
          value = <optimized out>
  #8  0x000055555557200d in read_prompt (prompt=prompt at entry=0x5555555928da "/") at src/prompt.c:499
          line = 0x0
          last_entry = <optimized out>
  #9  0x000055555557a2f6 in search_view (view=0x5555555ea9e0 <pager_view>, request=REQ_SEARCH) at src/search.c:240
          prompt = 0x5555555928da "/"
          search = <optimized out>
  #10 0x000055555556134d in view_driver (request=REQ_SEARCH, view=0x5555555ea9e0 <pager_view>) at src/tig.c:296
          i = <optimized out>
          i = <optimized out>
          line = <optimized out>
          nviews = <optimized out>
          next_view = <optimized out>
  #11 main (argc=<optimized out>, argv=<optimized out>) at src/tig.c:840
          codeset = <optimized out>
          pager_mode = true
          request = <optimized out>
          view = <optimized out>
  A debugging session is active.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: tig 2.4.1-1build1
  ProcVersionSignature: Ubuntu 4.18.0-21.22~18.04.1-generic 4.18.20
  Uname: Linux 4.18.0-21-generic x86_64
  ApportVersion: 2.20.11-0ubuntu8
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Nov  4 13:37:48 2019
  SourcePackage: tig
  UpgradeStatus: No upgrade log present (probably fresh install)

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