Added --normalize option.

README

@@ -186,6 +186,10 @@ Options
     equivalents in standard markdown (e.g. definition lists or strikeout
     text) will be parsed as raw HTML.
 
+`--normalize`
+:   Normalize the document after reading:  merge adjacent
+    `Str` or `Emph` elements, for example, and remove repeated `Space`s.
+
 `--reference-links`
 :   Use reference-style links, rather than inline links, in writing markdown
     or reStructuredText.  By default inline links are used.

src/pandoc.hs

@@ -32,7 +32,7 @@ module Main where
 import Text.Pandoc
 import Text.Pandoc.S5 (s5HeaderIncludes)
 import Text.Pandoc.Shared ( tabFilter, ObfuscationMethod (..), readDataFile,
-                            headerShift, findDataFile )
+                            headerShift, findDataFile, normalize )
 #ifdef _HIGHLIGHTING
 import Text.Pandoc.Highlighting ( languages )
 #endif
@@ -215,6 +215,12 @@ options =
                   (\opt -> return opt { optStrict = True } ))
                  "" -- "Disable markdown syntax extensions"
 
+    , Option "" ["normalize"]
+                 (NoArg
+                  (\opt -> return opt { optTransforms =
+                                   normalize : optTransforms opt } ))
+                 "" -- "Normalize the Pandoc AST"
+
     , Option "" ["reference-links"]
                  (NoArg
                   (\opt -> return opt { optReferenceLinks = True } ))