fix(latex): add renamed lowercase function variants

latex mode renamed some functions which used TeX and LaTeX to just all
lowercase.  We added these functions to the list of "special self
insert commands" so smartparens runs the appropriate hooks afterwards.

Fixes #834

smartparens.el

@@ -2027,7 +2027,8 @@ BODY, do nothing."
 (defvar sp--self-insert-commands
   '(self-insert-command
     org-self-insert-command
-    LaTeX-insert-left-brace)
+    LaTeX-insert-left-brace
+    latex-insert-left-brace)
    "List of commands that are some sort of `self-insert-command'.
 
 Many modes rebind \"self-inserting\" keys to \"smart\" versions
@@ -2041,6 +2042,12 @@ of pairs and wraps.")
   '(
     TeX-insert-dollar
     TeX-insert-quote
+    ;; At some point the TeX and LaTeX functions were renamed to
+    ;; lower-case names.  This broke some code dealing with these
+    ;; modes, so we just add both versions for now.
+    tex-insert-dollar
+    tex-insert-quote
+    latex-insert-quote
     quack-insert-opening-paren
     quack-insert-closing-paren
     quack-insert-opening-bracket

test/smartparens-latex-test.el

@@ -92,3 +92,11 @@ thesmeves and would not break unrelated pair)"
       (latex-mode)
     (execute-kbd-macro "``")
     (sp-buffer-equals "$foo ``| baz$")))
+
+;; #834
+(ert-deftest sp-test-latex-wrap-with-trigger ()
+  "A region should be wrapped with a pair if trigger key is pressed."
+  (sp-test-with-temp-buffer "foo Mbar baz| bam"
+      (latex-mode)
+    (execute-kbd-macro "\"")
+    (sp-buffer-equals "foo ``bar baz''| bam")))