Autocomplete sigil terminator

[michalmuskala]

Today, some sigil terminators wil autocomplete, but others won't - this is especially annoying with the simple "" terminators since after adding one " the other is not completed, but adding another one automatically tries to close it. The result is that one ends up with three quotes instead of two.

What works:

• ~r[ completes to ~r[]
• ~r{ completes to ~r{}
• ~r( completes to ~r()

What doesn't work:

• ~r| does not complete
• ~r< does not complete
• ~r/ does not complete

What is broken

• ~r" does not complete and trying to do it manually ends up with ~r"""
• ~r' does not complete and trying to do it manually ends up with ~r'''