Use https: for mathjax/katex/google-charts CDNs.

Closes #1920.

1 files changed, 5 insertions, 5 deletions

diff --git a/pandoc.hs b/pandoc.hs
index b90e8a09d..8aa85befc 100644
--- a/pandoc.hs
+++ b/pandoc.hs
@@ -813,7 +813,7 @@ options =
                   (\arg opt -> do
                       let url' = case arg of
                                       Just u   -> u
-                                      Nothing  -> "http://chart.apis.google.com/chart?cht=tx&chl="
+                                      Nothing  -> "https://chart.apis.google.com/chart?cht=tx&chl="
                       return opt { optHTMLMathMethod = WebTeX url' })
                   "URL")
                  "" -- "Use web service for HTML math"
@@ -829,7 +829,7 @@ options =
                   (\arg opt -> do
                       let url' = case arg of
                                       Just u   -> u
-                                      Nothing  -> "//cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"
+                                      Nothing  -> "https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"
                       return opt { optHTMLMathMethod = MathJax url'})
                   "URL")
                  "" -- "Use MathJax for HTML math"
@@ -838,7 +838,7 @@ options =
                   (\arg opt ->
                       return opt
                         { optKaTeXJS =
-                           arg <|> Just "http://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.1.0/katex.min.js"})
+                           arg <|> Just "https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.1.0/katex.min.js"})
                   "URL")
                   "" -- Use KaTeX for HTML Math
 
@@ -914,7 +914,7 @@ readMetaValue s = case decode (UTF8.fromString s) of
 usageMessage :: String -> [OptDescr (Opt -> IO Opt)] -> String
 usageMessage programName = usageInfo
   (programName ++ " [OPTIONS] [FILES]" ++ "\nInput formats:  " ++
-  (wrapWords 16 78 $ readers'names) ++ 
+  (wrapWords 16 78 $ readers'names) ++
      '\n' : replicate 16 ' ' ++
      "[ *only Pandoc's JSON version of native AST]" ++ "\nOutput formats: " ++
   (wrapWords 16 78 $ writers'names) ++
@@ -1109,7 +1109,7 @@ main = do
        mapM_ (\arg -> UTF8.hPutStrLn stdout arg) args
        exitWith ExitSuccess
 
-  let csscdn = "http://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.1.0/katex.min.css"
+  let csscdn = "https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.1.0/katex.min.css"
   let mathMethod =
         case (katexJS, katexStylesheet) of
             (Nothing, _) -> mathMethod'