Doc fixes and refactorings based on comments from Eli Zaretskii

* doc/lispref/processes.texi (Network Processes): Clarify the
meaning of :tls-parameters.

* lisp/net/gnutls.el (open-gnutls-stream): Clarify :nowait.

* lisp/net/gnutls.el (gnutls-boot-parameters): Factor out into
own function.
(gnutls-negotiate): Use it.
(open-gnutls-stream): Ditto.

* src/eval.c (vformat_string): Refactor out the printing bits
from verror.
(verror): Use it.

* src/gnutls.c (boot_error): Mark failed processes with the
real error message.

* src/lisp.h: Declare vformat_string.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/lisp.h b/src/lisp.h
index 02b8078a9fd..e87f47510f8 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -3908,6 +3908,8 @@ extern Lisp_Object unbind_to (ptrdiff_t, Lisp_Object);
 extern _Noreturn void error (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2);
 extern _Noreturn void verror (const char *, va_list)
   ATTRIBUTE_FORMAT_PRINTF (1, 0);
+extern Lisp_Object vformat_string (const char *, va_list)
+  ATTRIBUTE_FORMAT_PRINTF (1, 0);
 extern void un_autoload (Lisp_Object);
 extern Lisp_Object call_debugger (Lisp_Object arg);
 extern void *near_C_stack_top (void);