Minor improvements for tramp-interrupt-process, documentation

* doc/lispref/processes.texi (Signals to Processes):
* etc/NEWS: Document interrupt-process-functions.

* lisp/net/tramp.el (tramp-interrupt-process): Test also for
`process-live-p'.

* src/process.c (Vinterrupt_process_functions): Fix docstring.

* test/lisp/net/tramp-tests.el (tramp-test28-interrupt-process):
Extend test.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/process.c b/src/process.c
index e7ee99ab3d9..730caea677f 100644
--- a/src/process.c
+++ b/src/process.c
@@ -8192,8 +8192,8 @@ The variable takes effect when `start-process' is called.  */);
   Vprocess_adaptive_read_buffering = Qt;
 
   DEFVAR_LISP ("interrupt-process-functions", Vinterrupt_process_functions,
-               doc: /* List of functions to be called for `interrupt-function'.
-The arguments of the functions are the same as for `interrupt-function'.
+               doc: /* List of functions to be called for `interrupt-process'.
+The arguments of the functions are the same as for `interrupt-process'.
 These functions are called in the order of the list, until one of them
 returns non-`nil'.  */);
   Vinterrupt_process_functions = list1 (Qinternal_default_interrupt_process);