Added --number-from option and writerNumberFrom.

These still aren't hooked up to anything in the writers.

pandoc.hs

@@ -100,6 +100,7 @@ data Opt = Opt
     , optVariables         :: [(String,String)] -- ^ Template variables to set
     , optOutputFile        :: String  -- ^ Name of output file
     , optNumberSections    :: Bool    -- ^ Number sections in LaTeX
+    , optNumberFrom        :: Int     -- ^ Starting number for sections
     , optSectionDivs       :: Bool    -- ^ Put sections in div tags in HTML
     , optIncremental       :: Bool    -- ^ Use incremental lists in Slidy/Slideous/S5
     , optSelfContained     :: Bool    -- ^ Make HTML accessible offline
@@ -156,6 +157,7 @@ defaultOpts = Opt
     , optVariables             = []
     , optOutputFile            = "-"    -- "-" means stdout
     , optNumberSections        = False
+    , optNumberFrom            = 1
     , optSectionDivs           = False
     , optIncremental           = False
     , optSelfContained         = False
@@ -467,6 +469,15 @@ options =
                   (\opt -> return opt { optNumberSections = True }))
                  "" -- "Number sections in LaTeX"
 
+    , Option "" ["number-from"]
+                 (ReqArg
+                  (\arg opt ->
+                      case safeRead arg of
+                           Just n -> return opt { optNumberFrom = n }
+                           _      -> err 57 "could not parse number-from")
+                 "NUMBER")
+                 "" -- "Starting number for sections"
+
     , Option "" ["no-tex-ligatures"]
                  (NoArg
                   (\opt -> return opt { optTeXLigatures = False }))
@@ -829,6 +840,7 @@ main = do
               , optTemplate              = templatePath
               , optOutputFile            = outputFile
               , optNumberSections        = numberSections
+              , optNumberFrom            = numberFrom
               , optSectionDivs           = sectionDivs
               , optIncremental           = incremental
               , optSelfContained         = selfContained
@@ -1022,6 +1034,7 @@ main = do
                             writerBiblioFiles      = reffiles,
                             writerIgnoreNotes      = False,
                             writerNumberSections   = numberSections,
+                            writerNumberFrom       = numberFrom,
                             writerSectionDivs      = sectionDivs,
                             writerReferenceLinks   = referenceLinks,
                             writerWrapText         = wrap,

src/Text/Pandoc/Options.hs

@@ -270,6 +270,7 @@ data WriterOptions = WriterOptions
   , writerHTMLMathMethod   :: HTMLMathMethod  -- ^ How to print math in HTML
   , writerIgnoreNotes      :: Bool   -- ^ Ignore footnotes (used in making toc)
   , writerNumberSections   :: Bool   -- ^ Number sections in LaTeX
+  , writerNumberFrom       :: Int    -- ^ Starting section number
   , writerSectionDivs      :: Bool   -- ^ Put sections in div tags in HTML
   , writerExtensions       :: Set Extension -- ^ Markdown extensions that can be used
   , writerReferenceLinks   :: Bool   -- ^ Use reference links in writing markdown, rst
@@ -313,6 +314,7 @@ instance Default WriterOptions where
                       , writerHTMLMathMethod   = PlainMath
                       , writerIgnoreNotes      = False
                       , writerNumberSections   = False
+                      , writerNumberFrom       = 1
                       , writerSectionDivs      = False
                       , writerExtensions       = pandocExtensions
                       , writerReferenceLinks   = False