Revert "s:Detect: only add readable files to &tags and doc"

This reverts commit 31dead6d8088dc7073d0e2645517ebc68d6de06b.
Generating the tags file after already loading the buffer burns me over
and over and over again, and I'm not convinced there was a problem to
begin with.
Fix supposed "Press ENTER" prompt

Closes #189, #190.