From ed1173ace6c545f5b98c2b84859db89a6b9e799d Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Thu, 19 Nov 2015 20:18:06 -0800
Subject: Rationalized behavior of --no-tex-ligatures and --smart.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This change makes `--no-tex-ligatures` affect the LaTeX reader
as well as the LaTeX and ConTeXt writers.  If it is used,
the LaTeX reader will parse characters `` ` ``, `'`, and `-`
literally, rather than parsing ligatures for quotation marks
and dashes.  And the LaTeX writer will print unicode quotation
mark and dash characters literally, rather than converting
them to the standard ASCII ligatures.

Note that `--smart` has no affect on the LaTeX reader.

`--smart` is still the default for all input formats when
LaTeX or ConTeXt is the output format, *unless* `--no-tex-ligatures`
is used.

Some examples to illustrate the logic:

```
% echo "'hi'" | pandoc -t latex
`hi'
% echo "'hi'" | pandoc -t latex --no-tex-ligatures
'hi'
% echo "'hi'" | pandoc -t latex --no-tex-ligatures --smart
‘hi’
% echo "'hi'" | pandoc -f latex --no-tex-ligatures
<p>'hi'</p>
% echo "'hi'" | pandoc -f latex
<p>’hi’</p>
```

Closes #2541.
---
 pandoc.hs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'pandoc.hs')

diff --git a/pandoc.hs b/pandoc.hs
index edcaa4bb9..2353ebb11 100644
--- a/pandoc.hs
+++ b/pandoc.hs
@@ -1176,6 +1176,9 @@ main = do
                     "beamer" `isPrefixOf` writerName'
   let conTeXtOutput = "context" `isPrefixOf` writerName'
 
+  let laTeXInput = "latex" `isPrefixOf` readerName' ||
+                    "beamer" `isPrefixOf` readerName'
+
   writer <- if ".lua" `isSuffixOf` writerName'
                -- note:  use non-lowercased version writerName
                then return $ IOStringWriter $ writeCustom writerName
@@ -1257,8 +1260,10 @@ main = do
                                                      uriFragment = "" }
                                 _ -> Nothing
 
-  let readerOpts = def{ readerSmart = smart || (texLigatures &&
-                          (laTeXOutput || conTeXtOutput))
+  let readerOpts = def{ readerSmart = if laTeXInput
+                                         then texLigatures
+                                         else smart || (texLigatures &&
+                                               (laTeXOutput || conTeXtOutput))
                       , readerStandalone = standalone'
                       , readerParseRaw = parseRaw
                       , readerColumns = columns
-- 
cgit v1.2.3