[devhelp] util: make get_possible_index_files() private

[Sébastien Wilmet <swilmet src gnome org>]

commit 7b6d764957508429ab44deba52d3fc5f78694ed0
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Jan 7 12:39:40 2018 +0100

    util: make get_possible_index_files() private
    
    It's a new function, it's used only inside the lib, it's not used by the
    Devhelp application.

 src/dh-book-manager.c  |    2 +-
 src/dh-util.c          |    2 +-
 src/dh-util.h          |    3 ++-
 unit-tests/test-util.c |    2 +-
 4 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/src/dh-book-manager.c b/src/dh-book-manager.c
index 9ec06c5..0ed1e64 100644
--- a/src/dh-book-manager.c
+++ b/src/dh-book-manager.c
@@ -605,7 +605,7 @@ create_book_from_directory (DhBookManager *book_manager,
         GSList *possible_index_files;
         GSList *l;
 
-        possible_index_files = dh_util_get_possible_index_files (book_directory);
+        possible_index_files = _dh_util_get_possible_index_files (book_directory);
 
         for (l = possible_index_files; l != NULL; l = l->next) {
                 GFile *index_file = G_FILE (l->data);
diff --git a/src/dh-util.c b/src/dh-util.c
index 26efc3b..d2ff30f 100644
--- a/src/dh-util.c
+++ b/src/dh-util.c
@@ -305,7 +305,7 @@ _dh_util_free_book_tree (GNode *book_tree)
  * index files in @book_directory, in order of preference.
  */
 GSList *
-dh_util_get_possible_index_files (GFile *book_directory)
+_dh_util_get_possible_index_files (GFile *book_directory)
 {
         const gchar *extensions[] = {
                 ".devhelp2",
diff --git a/src/dh-util.h b/src/dh-util.h
index 89708a8..6e55858 100644
--- a/src/dh-util.h
+++ b/src/dh-util.h
@@ -50,7 +50,8 @@ void         dh_util_queue_concat                 (GQueue *q1,
 G_GNUC_INTERNAL
 void         _dh_util_free_book_tree              (GNode *book_tree);
 
-GSList *     dh_util_get_possible_index_files     (GFile *book_directory);
+G_GNUC_INTERNAL
+GSList *     _dh_util_get_possible_index_files    (GFile *book_directory);
 
 G_END_DECLS
 
diff --git a/unit-tests/test-util.c b/unit-tests/test-util.c
index 0f9b895..6060e58 100644
--- a/unit-tests/test-util.c
+++ b/unit-tests/test-util.c
@@ -27,7 +27,7 @@ check_get_possible_index_files (const gchar *book_directory_path,
         gint i;
 
         book_directory = g_file_new_for_path (book_directory_path);
-        list = dh_util_get_possible_index_files (book_directory);
+        list = _dh_util_get_possible_index_files (book_directory);
 
         g_assert_cmpint (g_slist_length (list), ==, 4);