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Fix Calc graph output on MS-Windows

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The previous code relied on "pgnuplot" executable, which is
no longer provided with Gnuplot 5.x.
* lisp/calc/calc.el (calc-gnuplot-name): Set to "pgnuplot" on
MS-Windows only if such an executable exists.
* lisp/calc/calc-graph.el (calc-graph-w32-p): New defsubst.
(calc-graph-plot, calc-graph-command, calc-gnuplot-command)
(calc-graph-init): Call calc-graph-w32-p wherever we need to
do something special for invoking gnuplot on MS-Windows,
instead of comparing against calc-gnuplot-name.
(calc-graph-plot): Set the terminal to "qt" on MS-Windows when
pgnuplot.exe is not available.
(calc-graph-kill): Delete the temporary files only after
killing the gnuplot process, otherwise the deletion might fail
on MS-Windows because the files are still in use.
This commit is contained in:
Eli Zaretskii 2019-01-13 17:50:16 +02:00
parent 03818b0a95
commit b26d6373c4
2 changed files with 31 additions and 15 deletions
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35
lisp/calc/calc-graph.el
View file

@ -65,6 +65,9 @@
(defvar calc-graph-no-wait nil)
(defvar calc-gnuplot-trail-mark)
(defsubst calc-graph-w32-p ()
(eq system-type 'windows-nt))
(defun calc-graph-fast (many)
(interactive "P")
(let ((calc-graph-no-auto-view t))
@ -376,8 +379,13 @@
;; Check MS-Windows before X, in case they have
;; $DISPLAY set for some reason (e.g., Cygwin or
;; whatever)
((string= calc-gnuplot-name "pgnuplot")
"windows")
((string= calc-gnuplot-name "pgnuplot")
"windows")
;; Versions of gnuplot that come without pgnuplot
;; only work on MS-Windows with "qt" as the
;; terminal, for some reason.
((calc-graph-w32-p)
"qt")
((or (eq window-system 'x) (getenv "DISPLAY"))
"x11")
((>= calc-gnuplot-version 3)
@ -1321,14 +1329,13 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
(calc-graph-init)
(calc-graph-view-trail)
(calc-gnuplot-command cmd)
(or (string= calc-gnuplot-name "pgnuplot")
(or (calc-graph-w32-p)
(progn
(accept-process-output)
(calc-graph-view-trail)))))
(defun calc-graph-kill (&optional no-view)
(interactive)
(calc-graph-delete-temps)
(if (calc-gnuplot-alive)
(calc-wrapper
(or no-view (calc-graph-view-trail))
@ -1337,7 +1344,8 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
(sit-for 1)
(if (process-status calc-gnuplot-process)
(delete-process calc-gnuplot-process))
(setq calc-gnuplot-process nil))))
(setq calc-gnuplot-process nil)))
(calc-graph-delete-temps))
(defun calc-graph-quit ()
(interactive)
@ -1404,7 +1412,7 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
(defun calc-gnuplot-command (&rest args)
(calc-graph-init)
(let ((cmd (concat (mapconcat 'identity args " ") "\n")))
(or (string= calc-gnuplot-name "pgnuplot")
(or (calc-graph-w32-p)
(accept-process-output))
(with-current-buffer calc-gnuplot-buffer
(calc-gnuplot-check-for-errors)
@ -1416,7 +1424,7 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
(process-send-string calc-gnuplot-process cmd)
(if (get-buffer-window calc-gnuplot-buffer)
(calc-graph-view-trail))
(or (string= calc-gnuplot-name "pgnuplot")
(or (calc-graph-w32-p)
(accept-process-output (and (not calc-graph-no-wait)
calc-gnuplot-process)))
(calc-gnuplot-check-for-errors)
@ -1445,8 +1453,9 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
(setq origin (point)))
(setq calc-graph-last-device nil)
(setq calc-graph-last-output nil)
(if (string= calc-gnuplot-name "pgnuplot")
(let ((version-str (shell-command-to-string "pgnuplot -V")))
(if (calc-graph-w32-p)
(let ((version-str
(shell-command-to-string (concat calc-gnuplot-name " -V"))))
(if (string-match "gnuplot \\([0-9]+\\)\\." version-str)
(setq calc-gnuplot-version (string-to-number
(substring version-str
@ -1457,11 +1466,11 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
(let ((args (append (and calc-gnuplot-display
(not (equal calc-gnuplot-display
(getenv "DISPLAY")))
(not (string= calc-gnuplot-name "pgnuplot"))
(not (calc-graph-w32-p))
(list "-display"
calc-gnuplot-display))
(and calc-gnuplot-geometry
(not (string= calc-gnuplot-name "pgnuplot"))
(not (calc-graph-w32-p))
(list "-geometry"
calc-gnuplot-geometry)))))
(setq calc-gnuplot-process
@ -1475,7 +1484,7 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
(error "Sorry, can't find \"%s\" on your system"
calc-gnuplot-name)))
(with-current-buffer calc-gnuplot-buffer
(while (and (not (string= calc-gnuplot-name "pgnuplot"))
(while (and (not (calc-graph-w32-p))
(not (save-excursion
(goto-char origin)
(search-forward "gnuplot> " nil t)))
@ -1483,7 +1492,7 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
(accept-process-output calc-gnuplot-process))
(or (memq (process-status calc-gnuplot-process) '(run stop))
(error "Unable to start GNUPLOT process"))
(if (not (string= calc-gnuplot-name "pgnuplot"))
(if (not (calc-graph-w32-p))
(if (save-excursion
(goto-char origin)
(re-search-forward

11
lisp/calc/calc.el
View file

@ -395,10 +395,17 @@ This is not required to be present for user-written mode annotations."
(string :tag "Closing annotation delimiter"))))
(defcustom calc-gnuplot-name
(if (eq system-type 'windows-nt) "pgnuplot" "gnuplot")
(if (and (eq system-type 'windows-nt)
;; Gnuplot v4.x on MS-Windows came with a special
;; pipe-enabled gnuplot executable for batch-mode
;; execution; newer versions allow using gnuplot.exe.
(executable-find "pgnuplot"))
"pgnuplot"
"gnuplot")
"Name of GNUPLOT program, for calc-graph features."
:group 'calc
:type '(string))
:type '(string)
:version "26.2")
(defcustom calc-gnuplot-plot-command
nil