The main thrust is to get rid of the use of the `cl-struct-slots'
property which doesn't exist in Emacs-25 any more.
* yasnippet.el: Update copyright
(yas--template): Change constructor name from
`yas--make-blank-template' to `yas--make-template'
(yas--populate-template): Remove.
(yas--define-snippets-1): Use `yas--make-template'
(yas--define-snippets-1): Use `setf's
(yas-define-menu, yas--define-menu-1, yas-tryout-snippet): Use
`yas--make-template'
Collect some conventions about contributing to Yasnippet (which have
been scattered amongst various issues/pull request) into a single file.
* CONTRIBUTING.md: New File.
Clarify what happens with yas-new-snippet.
Added more detail about how yas-new-snippet behaves,
particularly how it guesses a directory to save in.
* doc/snippet-development.org (Quickly finding snippets):
enhance section.
* yasnippet.el (yas--fallback): let-bind yas-fallback-behavior to
'yas--fallback before actually doing the fallback. Signal an error if
it's 'yas--fallback (indicating we're in an infinte loop).
* yasnippet.el (yas-installed-snippets-dir): New parameter. Set at
load time from `load-file-name'.
(yas--load-file-name): Removed.
(yas-snippet-dirs): Update docstring. Default value has symbol
`yas-installed-snippets-dir' as an alias to any bundled snippets.
(yas-snippet-dirs): Redesign for new `yas-snippet-dirs' semantics.
* yasnippet-tests.el (issue-504-tricky-jit): New test.
* yasnippet.el (yas-load-directory): Use a new `impatient-buffers'
local and call `yas--load-pending-juts' in all those at the end.
* yasnippet.el (cl-lib): Don't need `eval-and-compile'.
* yasnippet.el (yas--templates-for-key-at-point): Don't error
since this function is called very frequently on TAB. Use new
`yas--warning'.
(yas--warning): New function.
* yasnippet.el (yas-longest-key-from-whitespace): don't try again if
start-point is on whitespace.
* yasnippet-tests.el (complicated-yas-key-syntaxes): check edge case.
Example yas-key-syntaxes function.
* yasnippet.el (yas-longest-key-from-whitespace): new function.
* yasnippet-tests.el (complicated-yas-key-syntaxes): test it.
Example yas-key-syntaxes function.
* yasnippet.el (yas-shortest-key-until-whitespace): new function.
* yasnippet-tests.el (complicated-yas-key-syntaxes): test it.
Many modes put newlines in comment ender class because they have line
comments.
* yasnippet.el (yas-try-key-from-whitespace): new function.
(yas-key-syntaxes): use it in place of "^ ".
* yasnippet-tests.el (complicated-yas-key-syntaxes): test it.
* yasnippet-tests.el (issue-492-and-494): New test.
* yasnippet.el (yas--modes-to-activate): Consider each mode's
symbol-function as a neighbour in case it's a symbol as well.
* yasnippet-tests.el (example-for-issue-474): Don't call insert from
within backquotes, it's redundant and prevents proper testing of
backquote expansion.
* yasnippet.el (yas--restore-backquotes, yas--save-backquotes): Ensure
the buffer isn't narrowed while modifying it to avoid conflicting with
cc-mode fontification.
