Major cleanup; may imply minor changes in edge cases of error reporting.

Finally, drop support for the run-time configurable mandocmsg()
callback.  It was over-engineered from the start, never used for
anything in a decade, and repeatedly caused maintenance headaches.

Consolidate reporting infrastructure into two files, mandoc.h and
mandoc_msg.c, mopping up the bits and pieces that were scattered
around main.c, read.c, mandoc_parse.h, libmandoc.h, the prototypes
of four parsing-related functions, and both parser structs.

1 files changed, 2 insertions, 0 deletions

diff --git a/st.c b/st.c
index 5900a700..6940e17e 100644
--- a/st.c
+++ b/st.c
@@ -17,6 +17,8 @@
 #include "config.h"
 
 #include <sys/types.h>
+
+#include <stdio.h>
 #include <string.h>
 
 #include "mandoc.h"