Allow optional arguments to LaTeX macros to span lines. This is legal in

LaTeX and we have at least one occurance of that in the content, so this
script needs to support it as well.

diff --git a/Doc/tools/sgmlconv/latex2esis.py b/Doc/tools/sgmlconv/latex2esis.py
index 74e1dc7e12fb5dbbe41ec22c9a4ca98c5be50fc8..e694f5604da010060da1020f2851f51375fa29ce 100755 (executable)
--- a/Doc/tools/sgmlconv/latex2esis.py
+++ b/Doc/tools/sgmlconv/latex2esis.py
@@ -56,7 +56,7 @@ _end_env_rx = re.compile(r"[\\]end{([^}]*)}")
 _begin_macro_rx = re.compile(r"[\\]([a-zA-Z]+[*]?) ?({|\s*\n?)")
 _comment_rx = re.compile("%+ ?(.*)\n[ \t]*")
 _text_rx = re.compile(r"[^]~%\\{}]+")
-_optional_rx = re.compile(r"\s*[[]([^]]*)[]]")
+_optional_rx = re.compile(r"\s*[[]([^]]*)[]]", re.MULTILINE)
 # _parameter_rx is this complicated to allow {...} inside a parameter;
 # this is useful to match tabular layout specifications like {c|p{24pt}}
 _parameter_rx = re.compile("[ \n]*{(([^{}}]|{[^}]*})*)}")