cmark: Add function & option to normalize text nodes.

So, instead of

    <text>Hi</text>
    <text>&amp;</text>
    <text>lo</text>

we get

    <text>Hi&amp;lo</text>

* Added exported `cmark_consolidate_text_nodes` function.
* Added `CMARK_OPT_NORMALIZE` to options.
* Added optional normalization in XML writer.
* Added `--normalize` option to command-line program.
* Updated man page.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/xml.c b/src/xml.c
index 2ae900c..93a6eda 100644
--- a/src/xml.c
+++ b/src/xml.c
@@ -123,6 +123,11 @@ char *cmark_render_xml(cmark_node *root, long options)
 	cmark_event_type ev_type;
 	cmark_node *cur;
 	struct render_state state = { &xml, 0 };
+
+	if (options & CMARK_OPT_NORMALIZE) {
+		cmark_consolidate_text_nodes(root);
+	}
+
 	cmark_iter *iter = cmark_iter_new(root);
 
 	cmark_strbuf_puts(state.xml,