* Re: [Emacs-diffs] master 9c4e309: Check that variable lists are actually lists
[not found] ` <20170119161943.49263220159@vcs.savannah.gnu.org>
@ 2017-01-19 16:40 ` Stefan Monnier
0 siblings, 0 replies; only message in thread
From: Stefan Monnier @ 2017-01-19 16:40 UTC (permalink / raw
To: emacs-devel; +Cc: Philipp Stephani
> 'let' and 'let*' document that their first argument has to be a list,
> but don't check for that; instead, they allow (and silently ignore)
> other types. Introduce an explicit type check.
Notice that this may end up breaking currently working code :-(
The way we've generally handled such issues is basically that if the
programmer wants sanity checks, he should byte-compile his code.
This has two corollaries:
- We should make sure that the *byte-compiler* does warn about
ill-formed code (we currently don't do a great job of that).
- The interpreter can do whatever it wants with ill-formed code and
doesn't need to go out of its way to detect it.
Stefan
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2017-01-19 16:40 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <20170119161943.5234.63498@vcs.savannah.gnu.org>
[not found] ` <20170119161943.49263220159@vcs.savannah.gnu.org>
2017-01-19 16:40 ` [Emacs-diffs] master 9c4e309: Check that variable lists are actually lists Stefan Monnier
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.