Correctly implement capitalisation.

Using `map toUpper` to capitalise text is wrong, as e.g.
“Straße” should be converted to “STRASSE”, which is 1 character
longer. This commit adds a `capitalize` function and replaces
2 identical implementations in different modules (`toCaps` and
`capitalize`) with it.

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/Tests/Writers/Plain.hs b/tests/Tests/Writers/Plain.hs
new file mode 100644
index 000000000..f8f1d3d90
--- /dev/null
+++ b/tests/Tests/Writers/Plain.hs
@@ -0,0 +1,21 @@
+{-# LANGUAGE OverloadedStrings #-}
+module Tests.Writers.Plain (tests) where
+
+import Test.Framework
+import Text.Pandoc.Builder
+import Text.Pandoc
+import Tests.Helpers
+import Tests.Arbitrary()
+
+
+infix 4 =:
+(=:) :: (ToString a, ToPandoc a)
+     => String -> (a, String) -> Test
+(=:) = test (writePlain def . toPandoc)
+
+
+tests :: [Test]
+tests = [ "strongly emphasized text to uppercase"
+             =: strong "Straße"
+             =?> "STRASSE"
+        ]