Split out exit code parts of 'eshell-close-handles' into a new function

* lisp/eshell/esh-cmd.el (eshell-last-command-status)
(eshell-last-command-result): Move here from esh-io.el.
(eshell-set-exit-info): New function, extracted from
'eshell-close-handles'.

* lisp/eshell/esh-io.el (eshell-close-handles): Make old calling
convention obsolete.  Update callers to use 'eshell-set-exit-info' as
needed.

lisp/eshell/em-alias.el

@@ -211,7 +211,8 @@ This is useful after manually editing the contents of the file."
     (let ((eshell-current-handles
            (eshell-create-handles eshell-aliases-file 'overwrite)))
       (eshell/alias)
-      (eshell-close-handles 0 'nil))))
+      (eshell-set-exit-info 0 nil)
+      (eshell-close-handles))))
 
 (defsubst eshell-lookup-alias (name)
   "Check whether NAME is aliased.  Return the alias if there is one."

lisp/eshell/esh-cmd.el

@@ -104,7 +104,6 @@
 (require 'esh-arg)
 (require 'esh-proc)
 (require 'esh-module)
-(require 'esh-io)
 (require 'esh-ext)
 
 (require 'eldoc)
@@ -276,8 +275,13 @@ Each element is of the form (FORM PROCESSES), as with
 Has the value `first', `last' for the first/last commands in the pipeline,
 otherwise t.")
 (defvar eshell-in-subcommand-p nil)
+
 (defvar eshell-last-arguments nil)
 (defvar eshell-last-command-name nil)
+(defvar-local eshell-last-command-status 0
+  "The exit code from the last command.  0 if successful.")
+(defvar-local eshell-last-command-result nil
+  "The result of the last command.  Not related to success.")
 
 (defvar eshell-deferrable-commands '(eshell-deferrable)
   "A list of functions which might return a deferrable process.
@@ -518,7 +522,6 @@ the second is ignored."
 	`(eshell-commands ,(cadr (cadr arg)) ,silent))
     arg))
 
-(defvar eshell-last-command-status)     ;Define in esh-io.el.
 (defvar eshell--local-vars nil
   "List of locally bound vars that should take precedence over env-vars.")
 
@@ -610,7 +613,13 @@ must be implemented via rewriting, rather than as a function."
 	   `(eshell-protect
              ,(eshell-invokify-arg (car (last terms)) t))))))
 
-(defvar eshell-last-command-result)     ;Defined in esh-io.el.
+(defun eshell-set-exit-info (status &optional result)
+  "Set the exit status and result for the last command.
+STATUS is the process exit code (zero, if the command completed
+successfully).  RESULT is the value of the last command."
+  (when status
+    (setq eshell-last-command-status status))
+  (setq eshell-last-command-result result))
 
 (defun eshell-exit-success-p ()
   "Return non-nil if the last command was successful.
@@ -787,7 +796,8 @@ this grossness will be made to disappear by using `call/cc'..."
            (mapc #'funcall eshell-this-command-hook)))
      (error
       (eshell-errorn (error-message-string err))
-      (eshell-close-handles 1))))
+      (eshell-set-exit-info 1)
+      (eshell-close-handles))))
 
 (define-obsolete-function-alias 'eshell-trap-errors #'eshell-do-command "31.1")
 
@@ -1415,10 +1425,10 @@ case."
      ;; command status to some non-zero value to indicate an error; to
      ;; match GNU/Linux, we use 141, which the numeric value of
      ;; SIGPIPE on GNU/Linux (13) with the high bit (2^7) set.
-     (setq eshell-last-command-status 141)
+     (eshell-set-exit-info 141)
      nil)
     (error
-     (setq eshell-last-command-status 1)
+     (eshell-set-exit-info 1)
      (let ((msg (error-message-string err)))
        (if (and (not form-p)
                 (string-match "^Wrong number of arguments" msg)
@@ -1497,8 +1507,8 @@ a string naming a Lisp function."
   (unless eshell-allow-commands
     (signal 'eshell-commands-forbidden '(lisp)))
   (catch 'eshell-external               ; deferred to an external command
-    (setq eshell-last-command-status 0
-          eshell-last-arguments args)
+    (eshell-set-exit-info 0)
+    (setq eshell-last-arguments args)
     (let* ((eshell-ensure-newline-p t)
            (command-form-p (functionp object))
            (result
@@ -1533,7 +1543,7 @@ a string naming a Lisp function."
               (eshell-eval* #'eshell-print-maybe-n
                             #'eshell-error-maybe-n
                             object))))
-      (eshell-close-handles
+      (eshell-set-exit-info
        ;; If `eshell-lisp-form-nil-is-failure' is non-nil, Lisp forms
        ;; that succeeded but have a nil result should have an exit
        ;; status of 2.
@@ -1542,7 +1552,8 @@ a string naming a Lisp function."
                   (= eshell-last-command-status 0)
                   (not result))
          2)
-       (list 'quote result)))))
+       result)
+      (eshell-close-handles))))
 
 (define-obsolete-function-alias 'eshell-lisp-command* #'eshell-lisp-command
   "31.1")

lisp/eshell/esh-io.el

@@ -200,12 +200,6 @@ describing the mode, e.g. for using with `eshell-get-target'.")
 
 (defvar eshell-current-handles nil)
 
-(defvar-local eshell-last-command-status 0
-  "The exit code from the last command.  0 if successful.")
-
-(defvar eshell-last-command-result nil
-  "The result of the last command.  Not related to success.")
-
 (defvar eshell-output-file-buffer nil
   "If non-nil, the current buffer is a file output buffer.")
 
@@ -382,23 +376,27 @@ is not shared with the original handles."
       (cl-incf (cdar handle))))
   handles)
 
-(defun eshell-close-handles (&optional exit-code result handles)
+(declare-function eshell-exit-success-p "esh-cmd")
+
+(defun eshell-close-handles (&optional handles obsolete-1 obsolete-2)
   "Close all of the current HANDLES, taking refcounts into account.
-If HANDLES is nil, use `eshell-current-handles'.
+If HANDLES is nil, use `eshell-current-handles'."
+  (declare (advertised-calling-convention (&optional handles) "30.1"))
+  (when (or obsolete-1 obsolete-2 (numberp handles))
+    (declare-function eshell-set-exit-info "esh-cmd"
+                      (&optional exit-code result))
+    ;; In addition to setting the advertised calling convention, warn
+    ;; if we get here.  A caller may have called with the right number
+    ;; of arguments but the wrong type.
+    (display-warning '(eshell close-handles)
+                     "Called `eshell-close-handles' with obsolete arguments")
+    ;; Here, HANDLES is really the exit code.
+    (when (or handles obsolete-1)
+      (eshell-set-exit-info (or handles 0) (cadr obsolete-1)))
+    (setq handles obsolete-2))
 
-EXIT-CODE is the process exit code (zero, if the command
-completed successfully).  If nil, then use the exit code already
-set in `eshell-last-command-status'.
-
-RESULT is the quoted value of the last command.  If nil, then use
-the value already set in `eshell-last-command-result'."
-  (when exit-code
-    (setq eshell-last-command-status exit-code))
-  (when result
-    (cl-assert (eq (car result) 'quote))
-    (setq eshell-last-command-result (cadr result)))
   (let ((handles (or handles eshell-current-handles))
-        (succeeded (= eshell-last-command-status 0)))
+        (succeeded (eshell-exit-success-p)))
     (dotimes (idx eshell-number-of-handles)
       (eshell-close-handle (aref handles idx) succeeded))))
 

lisp/eshell/esh-proc.el

@@ -129,6 +129,7 @@ To add or remove elements of this list, see
 (declare-function eshell-reset "esh-mode" (&optional no-hooks))
 (declare-function eshell-send-eof-to-process "esh-mode")
 (declare-function eshell-interactive-filter "esh-mode" (buffer string))
+(declare-function eshell-set-exit-info "esh-cmd" (status result))
 (declare-function eshell-tail-process "esh-cmd")
 
 (defvar-keymap eshell-proc-mode-map
@@ -460,10 +461,11 @@ Used only on systems which do not support async subprocesses.")
 	    (setq lbeg lend)
 	    (set-buffer proc-buf))
 	  (set-buffer oldbuf))
-	;; Simulate the effect of eshell-sentinel.
-	(eshell-close-handles
+        ;; Simulate the effect of `eshell-sentinel'.
+        (eshell-set-exit-info
          (if (numberp exit-status) exit-status -1)
-         (list 'quote (and (numberp exit-status) (= exit-status 0))))
+         (and (numberp exit-status) (= exit-status 0)))
+        (eshell-close-handles)
 	(run-hook-with-args 'eshell-kill-hook command exit-status)
 	(or (bound-and-true-p eshell-in-pipeline-p)
 	    (setq eshell-last-sync-output-start nil))
@@ -545,9 +547,6 @@ PROC is the process that's exiting.  STRING is the exit message."
                  (index (process-get proc :eshell-handle-index))
                  (primary (= index eshell-output-handle))
                  (data (process-get proc :eshell-pending))
-                 ;; Only get the status for the primary subprocess,
-                 ;; not the pipe process (if any).
-                 (status (when primary (process-exit-status proc)))
                  (stderr-live (process-get proc :eshell-stderr-live)))
             ;; Write the exit message for the last process in the
             ;; foreground pipeline if its status is abnormal and
@@ -577,10 +576,10 @@ PROC is the process that's exiting.  STRING is the exit message."
                                   (ignore-error eshell-pipe-broken
                                     (eshell-output-object
                                      data index handles)))
-                                (eshell-close-handles
-                                 status
-                                 (when status (list 'quote (= status 0)))
-                                 handles)
+                                (when primary
+                                  (let ((status (process-exit-status proc)))
+                                    (eshell-set-exit-info status (= status 0))))
+                                (eshell-close-handles handles)
                                 ;; Clear the handles to mark that we're 100%
                                 ;; finished with the I/O for this process.
                                 (process-put proc :eshell-handles nil)