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Return non-nil from gnutls-available-p under GnuTLS 2.x

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* doc/misc/emacs-gnutls.texi (Help For Users): Update the
documentation of 'gnutls-available-p'.

* etc/NEWS (GnuTLS): Mention the change in the value returned by
'gnutls-available-p'.

* src/gnutls.c (Fgnutls_available_p): Return non-nil when GnuTLS
2.x is available.  (Bug#29147)
This commit is contained in:
Eli Zaretskii 2017-11-05 17:26:36 +02:00
parent a2cc6d74c5
commit c572e1f329
3 changed files with 11 additions and 1 deletions
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6
doc/misc/emacs-gnutls.texi
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@ -94,7 +94,11 @@ There's one way to find out if GnuTLS is available, by calling
Zaretskii) in the same directory as Emacs, you should be OK.
@defun gnutls-available-p
This function returns @code{t} if GnuTLS is available in this instance of Emacs.
This function returns non-@code{nil} if GnuTLS is available in this
instance of Emacs, @code{nil} otherwise. If GnuTLS is available, the
value is a list of GnuTLS capabilities supported by the installed
GnuTLS library, which depends on the library version. The meaning of
the capabilities is documented in the doc string of this function.
@end defun
Oh, but sometimes things go wrong. Budgets aren't balanced,

4
etc/NEWS
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@ -1535,6 +1535,10 @@ See the node "(elisp) Checksum/Hash" in the ELisp manual for details.
and 'gnutls-symmetric-decrypt'.
See the node "(elisp) GnuTLS Cryptography" in the ELisp manual for details.
+++
** The function 'gnutls-available-p' now returns a list of capabilities
supported by the GnuTLS library used by Emacs.
+++
** Emacs now supports records for user-defined types, via the new
functions 'make-record', 'record', and 'recordp'. Records are now

2
src/gnutls.c
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@ -2422,6 +2422,8 @@ GnuTLS AEAD ciphers : the list will contain `AEAD-ciphers'. */)
#ifdef HAVE_GNUTLS
capabilities = Fcons (intern("gnutls"), capabilities);
# ifdef HAVE_GNUTLS3
capabilities = Fcons (intern("gnutls3"), capabilities);
capabilities = Fcons (intern("digests"), capabilities);