Change 'groff' -> 'roff'.

These formats (man, ms) are not groff-specific.

MANUAL.txt

@@ -285,13 +285,13 @@ General options {.options}
     - `jats` ([JATS] XML)
     - `json` (JSON version of native AST)
     - `latex` ([LaTeX])
-    - `man` ([groff man])
+    - `man` ([roff man])
     - `markdown` ([Pandoc's Markdown])
     - `markdown_mmd` ([MultiMarkdown])
     - `markdown_phpextra` ([PHP Markdown Extra])
     - `markdown_strict` (original unextended [Markdown])
     - `mediawiki` ([MediaWiki markup])
-    - `ms` ([groff ms])
+    - `ms` ([roff ms])
     - `muse` ([Muse]),
     - `native` (native Haskell),
     - `odt` ([OpenOffice text document][ODT])
@@ -442,8 +442,8 @@ General options {.options}
 [TikiWiki markup]: https://doc.tiki.org/Wiki-Syntax-Text#The_Markup_Language_Wiki-Syntax
 [Haddock markup]: https://www.haskell.org/haddock/doc/html/ch03s08.html
 [Creole 1.0]: http://www.wikicreole.org/wiki/Creole1.0
-[groff man]: http://man7.org/linux/man-pages/man7/groff_man.7.html
-[groff ms]: http://man7.org/linux/man-pages/man7/groff_ms.7.html
+[roff man]: http://man7.org/linux/man-pages/man7/groff_man.7.html
+[roff ms]: http://man7.org/linux/man-pages/man7/groff_ms.7.html
 [Haskell]: https://www.haskell.org
 [GNU Texinfo]: http://www.gnu.org/software/texinfo/
 [Emacs Org mode]: http://orgmode.org
@@ -861,9 +861,9 @@ Options affecting specific writers {.options}
 :   Use only ASCII characters in output.  Currently supported for
     XML and HTML formats (which use entities instead of
     UTF-8 when this option is selected), Markdown (which uses
-    entities), groff ms (which use hexadecimal escapes), and to
+    entities), roff ms (which use hexadecimal escapes), and to
     a limited degree LaTeX (which uses standard commands for
-    accented characters when possible).  Groff man output uses
+    accented characters when possible).  roff man output uses
     ASCII by default.
 
 `--reference-links`
@@ -3334,7 +3334,7 @@ AsciiDoc
 Texinfo
   ~ It will be rendered inside a `@math` command.
 
-groff man
+roff man
   ~ It will be rendered verbatim without `$`'s.
 
 MediaWiki, DokuWiki
@@ -3474,7 +3474,7 @@ Emacs Org mode, and ConTeXt.
 Inline spans and fenced code blocks with a special
 kind of attribute will be parsed as raw content with the
 designated format.  For example, the following produces a raw
-groff `ms` block:
+roff `ms` block:
 
     ```{=ms}
     .MYMACRO

pandoc.cabal

@@ -20,12 +20,12 @@ description:     Pandoc is a Haskell library for converting from one markup
                  (subsets of) HTML, reStructuredText, LaTeX, DocBook, JATS,
                  MediaWiki markup, TWiki markup, TikiWiki markup, Creole 1.0,
                  Haddock markup, OPML, Emacs Org-Mode, Emacs Muse, txt2tags,
-                 Vimwiki, Word Docx, ODT, EPUB, FictionBook2, groff man,
+                 Vimwiki, Word Docx, ODT, EPUB, FictionBook2, roff man,
                  and Textile, and it can write Markdown, reStructuredText,
                  XHTML, HTML 5, LaTeX, ConTeXt, DocBook, JATS, OPML, TEI,
                  OpenDocument, ODT, Word docx, PowerPoint pptx,
                  RTF, MediaWiki, DokuWiki, ZimWiki, Textile,
-                 groff man, groff ms, plain text, Emacs Org-Mode,
+                 roff man, roff ms, plain text, Emacs Org-Mode,
                  AsciiDoc, Haddock markup, EPUB (v2 and v3),
                  FictionBook2, InDesign ICML, Muse, LaTeX beamer slides,
                  and several kinds of HTML/JavaScript slide shows

src/Text/Pandoc/Pretty.hs

@@ -432,7 +432,7 @@ nowrap doc = Doc $ mapWithIndex replaceSpace $ unDoc doc
         replaceSpace _ x             = x
 
 -- | Content to print only if it comes at the beginning of a line,
--- to be used e.g. for escaping line-initial `.` in groff man.
+-- to be used e.g. for escaping line-initial `.` in roff man.
 afterBreak :: String -> Doc
 afterBreak s = Doc $ singleton (AfterBreak s)
 

src/Text/Pandoc/Readers/Roff.hs

@@ -29,7 +29,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    Stability   : WIP
    Portability : portable
 
-Tokenizer for groff formats (man, ms).
+Tokenizer for roff formats (man, ms).
 -}
 module Text.Pandoc.Readers.Roff
   ( FontSpec(..)
@@ -705,7 +705,7 @@ linePartsToString = mconcat . map go
   go (RoffStr s) = s
   go _ = mempty
 
--- | Tokenize a string as a sequence of groff tokens.
+-- | Tokenize a string as a sequence of roff tokens.
 lexRoff :: PandocMonad m => SourcePos -> T.Text -> m RoffTokens
 lexRoff pos txt = do
   eithertokens <- readWithM (do setPosition pos

src/Text/Pandoc/Writers/Man.hs

@@ -27,7 +27,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    Stability   : alpha
    Portability : portable
 
-Conversion of 'Pandoc' documents to groff man page format.
+Conversion of 'Pandoc' documents to roff man page format.
 
 -}
 module Text.Pandoc.Writers.Man ( writeMan) where
@@ -55,7 +55,7 @@ writeMan :: PandocMonad m => WriterOptions -> Pandoc -> m Text
 writeMan opts document =
   evalStateT (pandocToMan opts document) defaultWriterState
 
--- | Return groff man representation of document.
+-- | Return roff man representation of document.
 pandocToMan :: PandocMonad m => WriterOptions -> Pandoc -> StateT WriterState m Text
 pandocToMan opts (Pandoc meta blocks) = do
   let colwidth = if writerWrapText opts == WrapAuto
@@ -116,7 +116,7 @@ noteToMan opts num note = do
   return $ marker $$ contents
 
 -- We split inline lists into sentences, and print one sentence per
--- line.  groff/troff treats the line-ending period differently.
+-- line.  roff treats the line-ending period differently.
 -- See http://code.google.com/p/pandoc/issues/detail?id=148.
 
 -- | Convert Pandoc block element to man.

src/Text/Pandoc/Writers/Ms.hs

@@ -26,7 +26,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    Stability   : alpha
    Portability : portable
 
-Conversion of 'Pandoc' documents to groff ms format.
+Conversion of 'Pandoc' documents to roff ms format.
 
 TODO:
 
@@ -69,7 +69,7 @@ writeMs :: PandocMonad m => WriterOptions -> Pandoc -> m Text
 writeMs opts document =
   evalStateT (pandocToMs opts document) defaultWriterState
 
--- | Return groff ms representation of document.
+-- | Return roff ms representation of document.
 pandocToMs :: PandocMonad m => WriterOptions -> Pandoc -> MS m Text
 pandocToMs opts (Pandoc meta blocks) = do
   let colwidth = if writerWrapText opts == WrapAuto
@@ -123,7 +123,7 @@ toSmallCaps opts (c:cs)
   | otherwise = escapeStr opts [c] ++ toSmallCaps opts cs
 
 -- We split inline lists into sentences, and print one sentence per
--- line.  groff/troff treats the line-ending period differently.
+-- line.  roff treats the line-ending period differently.
 -- See http://code.google.com/p/pandoc/issues/detail?id=148.
 
 blockToMs :: PandocMonad m
@@ -372,7 +372,7 @@ inlineToMs opts (Strong lst) =
 inlineToMs opts (Strikeout lst) = do
   contents <- inlineListToMs opts lst
   -- we use grey color instead of strikeout, which seems quite
-  -- hard to do in groff for arbitrary bits of text
+  -- hard to do in roff for arbitrary bits of text
   return $ text "\\m[strikecolor]" <> contents <> text "\\m[]"
 inlineToMs opts (Superscript lst) = do
   contents <- inlineListToMs opts lst

src/Text/Pandoc/Writers/Roff.hs

@@ -26,7 +26,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    Stability   : alpha
    Portability : portable
 
-Common functions for groff writers (man, ms).
+Common functions for roff writers (man, ms).
 -}
 
 module Text.Pandoc.Writers.Roff (
@@ -89,7 +89,7 @@ combiningAccentsMap = Map.fromList combiningAccents
 essentialEscapes :: Map.Map Char String
 essentialEscapes = Map.fromList standardEscapes
 
--- | Escape special characters for groff.
+-- | Escape special characters for roff.
 escapeString :: EscapeMode -> String -> String
 escapeString _ [] = []
 escapeString escapeMode ('\n':'.':xs) =