[Bug 1576583] Re: vim paste option bracks expandtab option

[AntonOlsen]

You can test this without a .vimrc

:set expandtab

Leading tabs get converted to spaces. 
:set all shows expantab.

:set paste

Leading tabs no longer get converted to tabs.
:set all shows "noexpandtab"

The converse is not true though, setting expandtab does not affect the
setting of paste. If you put set paste near the top of the vimrc it
should work as expected.

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https://bugs.launchpad.net/bugs/1576583

Title:
  vim paste option bracks expandtab option

Status in vim package in Ubuntu:
  New

Bug description:
  i am using ubuntu xenial.

  when I use vim options at the end of a file like the following:

  # vim: syntax=yaml ts=2 sw=2 et sr softtabstop=2 autoindent paste

  it should convert an entered tab into spaces (pressing tab should
  result into 2 spaces). in the past it actually did. currently it does
  not anymore. the problem here seems to be the last option "paste". if
  i leave out the paste options the expandtab (et) option works again.
  the paste option should not have any effect on the expandtab option
  though.

  
  steps to reproduce:

  - create a file with "# vim: syntax=yaml ts=2 sw=2 et sr softtabstop=2 autoindent paste" at the end of the file. 
  - save it
  - reopen it with vim
  - in insert mode: press tab key
  - the tab should have been converted into 2 spaces (but it doesn't)
  - remove the paste option  "# vim: syntax=yaml ts=2 sw=2 et sr softtabstop=2 autoindent"
  - save it
  - reopen it with vim
  - in insert mode: press tab key again
  - now the tab is converted into 2 spaces

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