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-rw-r--r--man/man3/cmark.39
1 files changed, 9 insertions, 0 deletions
diff --git a/man/man3/cmark.3 b/man/man3/cmark.3
index 5d04380..30165a1 100644
--- a/man/man3/cmark.3
+++ b/man/man3/cmark.3
@@ -274,6 +274,15 @@ typedef enum {
\fIint\fR \fBcmark_walk\fR(\fIcmark_node *root\fR, \fIcmark_node_handler handler\fR, \fIvoid *state\fR)
.PP
+Walks the tree starting from root, applying handler to each node.
+Nodes that can have children are visited twice, once on the way in
+and once on the way out. handler is a function that takes a node
+pointer, an integer direction (1 for entering, 0 for leaving),
+and a pointer to a state structure that can be consulted and
+updated by the handler. The handler should return 1 on success,
+0 on failure. cmark_walk returns 1 if it traversed the entire
+tree, 0 if it quit early in response to a 0 status from the
+handler.
.SH AUTHORS