Clean up the warnings related to document structure.

* Hierarchical naming of the related enum mandocerr items.
* Mention the offending macro, section title, or string.
While here, improve some wordings:
* Descriptive instead of imperative style.
* Uniform style for "missing" and "skipping".
* Where applicable, mention the fallback used.

1 files changed, 4 insertions, 1 deletions

diff --git a/man_validate.c b/man_validate.c
index 6ebf6cea..ad01423f 100644
--- a/man_validate.c
+++ b/man_validate.c
@@ -414,7 +414,10 @@ post_TH(CHKARGS)
 			/* Only warn about this once... */
 			if (isalpha((unsigned char)*p) &&
 			    ! isupper((unsigned char)*p)) {
-				man_nmsg(man, n, MANDOCERR_TITLE_CASE);
+				mandoc_msg(MANDOCERR_TITLE_CASE,
+				    man->parse, n->line,
+				    n->pos + (p - n->string),
+				    n->string);
 				break;
 			}
 		}