X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=mp.c;h=416b4f92065ef79716e7f966c3102e995071a112;hp=3f6cfbe6cd297ad2bc34490a77784679f434754f;hb=12f3368848dadafec9f00a137feff7f3597939be;hpb=23af03dbfb283045ff952267ee83c2b7f2ef6380

diff --git a/mp.c b/mp.c
index 3f6cfbe6..416b4f92 100644
--- a/mp.c
+++ b/mp.c
@@ -9,7 +9,7 @@
  * The public API (at the bottom of the file) allows parsing the same mood
  * definition many times in an efficient manner.
  *
- * The first function to all is \ref mp_init(), which analyzes the given mood
+ * The first function to call is \ref mp_init(), which analyzes the given mood
  * definition syntactically. It returns the abstract syntax tree of the mood
  * definition and pre-compiles all regular expression patterns to make later
  * pattern matching efficient.
@@ -491,10 +491,10 @@ int mp_init(const char *definition, int nbytes, struct mp_context **result,
 	struct mp_context *ctx;
 	struct yy_buffer_state *buffer_state;
 
+	*result = NULL;
 	if (!definition || nbytes == 0) { /* dummy mood */
 		if (errmsg)
 			*errmsg = NULL;
-		*result = NULL;
 		return 0;
 	}
 	ctx = para_calloc(sizeof(*ctx));
@@ -541,6 +541,8 @@ bool mp_eval_row(const struct osl_row *aft_row, struct mp_context *ctx)
 {
 	if (!ctx) /* dummy mood */
 		return true;
+	if (!ctx->ast) /* empty mood */
+		return true;
 	assert(aft_row);
 	ctx->aft_row = aft_row;
 	ctx->have_afsi = false;