Make 'tex-validate-buffer' work again

* lisp/textmodes/tex-mode.el (tex-validate-buffer): The *Occur*
buffer is read-only, so inhibit that before inserting things into
it (bug#19326).

1 files changed, 5 insertions, 2 deletions

diff --git a/lisp/textmodes/tex-mode.el b/lisp/textmodes/tex-mode.el
index 8b8108cb97b..ababd775d5f 100644
--- a/lisp/textmodes/tex-mode.el
+++ b/lisp/textmodes/tex-mode.el
@@ -1427,7 +1427,9 @@ on the line for the invalidity you want to see."
                     (forward-line 1)
                     (setq num-matches (1+ num-matches))
                     (insert-buffer-substring buffer start end)
-                    (let (text-beg (text-end (point-marker)))
+                    (let ((text-end (point-marker))
+                          (inhibit-read-only t)
+                          text-beg)
                       (forward-char (- start end))
                       (setq text-beg (point-marker))
                       (insert (format "%3d: " linenum))
@@ -1439,7 +1441,8 @@ on the line for the invalidity you want to see."
                       (put-text-property text-beg (- text-end 1)
                                          'occur-target tem))))))))
       (with-current-buffer standard-output
-        (let ((no-matches (zerop num-matches)))
+        (let ((no-matches (zerop num-matches))
+              (inhibit-read-only t))
           (if no-matches
               (insert "None!\n"))
           (if (called-interactively-p 'interactive)