mark defos as const; nobody needs to change it,

and it is occasionally useful to be able to pass literal strings

5 files changed, 8 insertions, 6 deletions

diff --git a/libmandoc.h b/libmandoc.h
index 882d701d..51828a21 100644
--- a/libmandoc.h
+++ b/libmandoc.h
@@ -50,7 +50,8 @@ int		 mandoc_strntoi(const char *, size_t, int);
 const char	*mandoc_a2msec(const char*);
 
 void		 mdoc_free(struct mdoc *);
-struct	mdoc	*mdoc_alloc(struct roff *, struct mparse *, char *, int);
+struct	mdoc	*mdoc_alloc(struct roff *, struct mparse *,
+			const char *, int);
 void		 mdoc_reset(struct mdoc *);
 int		 mdoc_parseln(struct mdoc *, int, char *, int);
 int		 mdoc_endparse(struct mdoc *);
diff --git a/libmdoc.h b/libmdoc.h
index 417948c3..3cc58f80 100644
--- a/libmdoc.h
+++ b/libmdoc.h
@@ -25,7 +25,7 @@ enum	mdoc_next {
 
 struct	mdoc {
 	struct mparse	 *parse; /* parse pointer */
-	char		 *defos; /* default argument for .Os */
+	const char	 *defos; /* default argument for .Os */
 	int		  quick; /* abort parse early */
 	int		  flags; /* parse flags */
 #define	MDOC_HALT	 (1 << 0) /* error in parse: halt */
diff --git a/mandoc.h b/mandoc.h
index ff77e642..5df81b46 100644
--- a/mandoc.h
+++ b/mandoc.h
@@ -419,7 +419,8 @@ int		  mchars_spec2cp(const struct mchars *,
 			const char *, size_t);
 const char	 *mchars_spec2str(const struct mchars *,
 			const char *, size_t, size_t *);
-struct mparse	 *mparse_alloc(int, enum mandoclevel, mandocmsg, char *);
+struct mparse	 *mparse_alloc(int, enum mandoclevel, mandocmsg,
+			const char *);
 void		  mparse_free(struct mparse *);
 void		  mparse_keep(struct mparse *);
 enum mandoclevel  mparse_readfd(struct mparse *, int, const char *);
diff --git a/mdoc.c b/mdoc.c
index ead01c15..d5ae55cf 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -189,7 +189,7 @@ mdoc_free(struct mdoc *mdoc)
  */
 struct mdoc *
 mdoc_alloc(struct roff *roff, struct mparse *parse,
-	char *defos, int quick)
+	const char *defos, int quick)
 {
 	struct mdoc	*p;
 
diff --git a/read.c b/read.c
index dd25696c..20fa2640 100644
--- a/read.c
+++ b/read.c
@@ -65,7 +65,7 @@ struct	mparse {
 	mandocmsg	  mmsg; /* warning/error message handler */
 	const char	 *file;
 	struct buf	 *secondary;
-	char		 *defos; /* default operating system */
+	const char	 *defos; /* default operating system */
 };
 
 static	void	  resize_buf(struct buf *, size_t);
@@ -781,7 +781,7 @@ out:
 
 struct mparse *
 mparse_alloc(int options, enum mandoclevel wlevel,
-		mandocmsg mmsg, char *defos)
+		mandocmsg mmsg, const char *defos)
 {
 	struct mparse	*curp;