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master ed84f24a21: Make `signal-process' allow completing over signal na
From: |
Lars Ingebrigtsen |
Subject: |
master ed84f24a21: Make `signal-process' allow completing over signal names |
Date: |
Sun, 26 Jun 2022 16:47:57 -0400 (EDT) |
branch: master
commit ed84f24a215a65dcf2ef49d343eebdbd4be178ee
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>
Make `signal-process' allow completing over signal names
* lisp/simple.el (read-signal-name): New function.
* src/process.c (Fsignal_process): Use it to allow completing over
the signal names (bug#56239).
(Fsignal_names): New function.
---
lisp/simple.el | 13 +++++++++++++
src/process.c | 19 ++++++++++++++++++-
2 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/lisp/simple.el b/lisp/simple.el
index a750eed72b..6d62c02865 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -10627,6 +10627,19 @@ If the buffer doesn't exist, create it first."
"Check whether STRING is empty."
(string= string ""))
+(defun read-signal-name ()
+ "Read a signal number or name."
+ (let ((value
+ (completing-read "Signal code or name: "
+ (signal-names)
+ nil
+ (lambda (value)
+ (or (string-match "\\`[0-9]+\\'" value)
+ (member value (signal-names)))))))
+ (if (string-match "\\`[0-9]+\\'" value)
+ (string-to-number value)
+ (intern (concat "sig" (downcase value))))))
+
(provide 'simple)
diff --git a/src/process.c b/src/process.c
index b2847ee172..5cb5d95222 100644
--- a/src/process.c
+++ b/src/process.c
@@ -7109,7 +7109,7 @@ See function `signal-process' for more details on usage.
*/)
}
DEFUN ("signal-process", Fsignal_process, Ssignal_process,
- 2, 3, "sProcess (name or number): \nnSignal code: ",
+ 2, 3, "(list (read-string \"Process (name or number): \")
(read-signal-name))",
doc: /* Send PROCESS the signal with code SIGCODE.
PROCESS may also be a number specifying the process id of the
process to signal; in this case, the process need not be a child of
@@ -8317,6 +8317,22 @@ If QUERY is `all', also count processors not available.
*/)
#endif
}
+DEFUN ("signal-names", Fsignal_names, Ssignal_names, 0, 0, 0,
+ doc: /* Return a list of known signal names on this system. */)
+ (void)
+{
+ char name[SIG2STR_MAX];
+ Lisp_Object names = Qnil;
+ for (int i = 0; i < 255; ++i)
+ {
+ if (!sig2str (i, name))
+ {
+ names = Fcons (build_string (name), names);
+ }
+ }
+ return names;
+}
+
#ifdef subprocesses
/* Arrange to catch SIGCHLD if this hasn't already been arranged.
Invoke this after init_process_emacs, and after glib and/or GNUstep
@@ -8770,4 +8786,5 @@ sentinel or a process filter function has an error. */);
defsubr (&Slist_system_processes);
defsubr (&Sprocess_attributes);
defsubr (&Snum_processors);
+ defsubr (&Ssignal_names);
}
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