Fix \href{a_b} in tex-mode

* lisp/textmodes/tex-mode.el (tex-font-lock-keywords-2): Fontify
href parameters like constants so that _ aren't fontified like
subscripts.

diff --git a/lisp/textmodes/tex-mode.el b/lisp/textmodes/tex-mode.el
index 1925d93d93af5bcbe39d45e5618676a1dfd5d965..f41cc2c15eda9608223840e2922f24b222af758b 100644 (file)
--- a/lisp/textmodes/tex-mode.el
+++ b/lisp/textmodes/tex-mode.el
@@ -578,6 +578,9 @@ An alternative value is \" . \", if you use a font with a narrow period."
                          ;; "caption" "footnote" "footnotemark" "footnotetext"
                          )
                        t))
+           (file-like (regexp-opt
+                       '("href" "ProvidesFile")
+                       t))
            ;;
            ;; Names of commands that should be fontified.
            (specials-1 (regexp-opt '("\\" "\\*") t)) ;; "-"
@@ -598,6 +601,8 @@ An alternative value is \" . \", if you use a font with a narrow period."
        ;;
        ;; Citation args.
        (list (concat slash citations opt arg) 3 'font-lock-constant-face)
+       ;; File-like args.
+       (list (concat slash file-like opt arg) 3 'font-lock-constant-face)
        ;;
         ;; Text between `` quotes ''.
         (list (concat (regexp-opt '("``" "\"<" "\"`" "<<" "«") t)