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(tex-view): Nice error if tex-dvi-view-command is nil.

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Richard M. Stallman
1995-04-29 16:32:03 +00:00
parent 7e04044f43
commit 2b7971c930
1 changed files with 5 additions and 1 deletions
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6
lisp/textmodes/tex-mode.el
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@@ -1088,8 +1088,12 @@ Runs the shell command defined by `tex-alt-dvi-print-command'."
(defun tex-view ()
"Preview the last `.dvi' file made by running TeX under Emacs.
This means, made using \\[tex-region], \\[tex-buffer] or \\[tex-file].
The variable `tex-dvi-view-command' specifies the shell command for preview."
The variable `tex-dvi-view-command' specifies the shell command for preview.
You must set that variable yourself before using this command,
because there is no standard value that would generally work."
(interactive)
(or tex-dvi-view-command
(error "You must set `tex-dvi-view-command'"))
(let ((tex-dvi-print-command tex-dvi-view-command))
(tex-print)))