LaTeX reader: allow non-empty colsep in tables

The `tabular` environment allows non-empty column separators
with the "@{...}" syntax. Previously, pandoc would fail to
parse tables if a non-empty colsep was present. With this
commit, these separators are still ignored, but the table gets
parsed. A test case is included.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Text/Pandoc/Readers/LaTeX.hs b/src/Text/Pandoc/Readers/LaTeX.hs
index 8689fde45..1df2d4caf 100644
--- a/src/Text/Pandoc/Readers/LaTeX.hs
+++ b/src/Text/Pandoc/Readers/LaTeX.hs
@@ -1275,7 +1275,7 @@ complexNatbibCitation mode = try $ do
 parseAligns :: LP [Alignment]
 parseAligns = try $ do
   char '{'
-  let maybeBar = skipMany $ sp <|> () <$ char '|' <|> () <$ try (string "@{}")
+  let maybeBar = skipMany $ sp <|> () <$ char '|' <|> () <$ (char '@' >> braced)
   maybeBar
   let cAlign = AlignCenter <$ char 'c'
   let lAlign = AlignLeft <$ char 'l'