* yasnippet.el (yas-not-string-or-comment-condition): New constant,
holding the previous default value of `yas-buffer-local-condition'.
(yas-buffer-local-condition): Make into defcustom.
Instead of making yas-expand and yas-expand-from-keymap search for the
command that would have been called, use a conditional keybinding so the
Emacs' builtin keybinding lookup code will do the searching instead.
* doc/faq.org: Remove section about old method binding method. Update
example to use new method.
* doc/snippet-expansion.org (Trigger key): Update explanation for new
method.
* yasnippet.el (yas-fallback-behavior): Mark obsolete.
(yas--maybe-expand-key-filter): New function.
(yas-maybe-expand): New conditional binding.
(yas-minor-mode-map): Bind it to TAB and <tab>.
(yas--maybe-expand-from-keymap-filter): New function, extracted from
`yas-expand-from-keymap'.
(yas-maybe-expand-from-keymap): New conditional binding.
* yasnippet-tests.el (yas--key-binding): New function, like
`key-binding' but overrides `this-command-keys-vector'.
(snippet-load-uuid): Use it.
(test-yas-tab-binding, test-yas-in-org): Insert snippet key before
testing binding.
This reverts commit f8d1af1f50f42ac1689c583c152c3b15e8774ae4.
Disabling this for trigger key introduced an inconsistency that is more
complicated to implement and document than simply fixing region wrapping
for trigger key expanded snippets.
It's too awkward to highlight the relevant text while maneuvering point
in front of the trigger key.
* yasnippet.el (yas-expand-from-trigger-key): Let-bind
yas-wrap-around-region to nil if it was t.
* doc/snippet-expansion.org: Document it.
