text: mark text_mark_get argument as const

2 files changed, 2 insertions, 2 deletions

diff --git a/text.c b/text.c
index 4c0b710..eb4058d 100644
--- a/text.c
+++ b/text.c
@@ -1750,7 +1750,7 @@ Mark text_mark_set(Text *txt, size_t pos) {
 	return (Mark)(loc.piece->data + loc.off);
 }
 
-size_t text_mark_get(Text *txt, Mark mark) {
+size_t text_mark_get(const Text *txt, Mark mark) {
 	size_t cur = 0;
 
 	if (mark == EMARK)
diff --git a/text.h b/text.h
index 72ca1fc..03a1001 100644
--- a/text.h
+++ b/text.h
@@ -300,7 +300,7 @@ Mark text_mark_set(Text*, size_t pos);
  * @param mark The mark to look up.
  * @return The byte position or ``EPOS`` for an invalid mark.
  */
-size_t text_mark_get(Text*, Mark);
+size_t text_mark_get(const Text*, Mark);
 /**
  * @}
  * @defgroup save