Match only exact excape keywords, e.g. in but not sin, arcsin

2012-09-09 15:08:32 -04:00
parent eab11bca42
commit 48543ba3c2
1 changed files with 2 additions and 1 deletions
--- a/common/lib/xmodule/xmodule/js/src/capa/display.coffee
+++ b/common/lib/xmodule/xmodule/js/src/capa/display.coffee
@@ -341,7 +341,8 @@ class @Problem
    replace_escape_keyword = (match) -> 
      return '"' + match + '"' # Force MathJax plain text
    for escape_keyword in escape_keywords
-      eqn = eqn.replace(escape_keyword, replace_escape_keyword)
+      escape_keyword_patt = RegExp('\\b'+escape_keyword+'\\b')
+      eqn = eqn.replace(escape_keyword_patt, replace_escape_keyword)

    return eqn