piece-table & text-buffer: Use `const`.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/piece-table.h b/src/piece-table.h
index a26ce82..7b77ed3 100644
--- a/src/piece-table.h
+++ b/src/piece-table.h
@@ -27,7 +27,7 @@ piece_table *piece_table_create_from_str (char *orig, size_t size);
 void piece_table_destroy (piece_table * piece_table);
 
 char piece_table_index (piece_table *pt, size_t pos);
-void piece_table_insert (piece_table *pt, size_t pos, char *in, size_t len);
+void piece_table_insert (piece_table *pt, size_t pos, const char *in, size_t len);
 void piece_table_delete (piece_table *pt, size_t pos, size_t len);
 
 void piece_table_to_string (piece_table *pt, char *buf, size_t size);