Use g_string_new_take().

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

lib/glibcompat.c

@@ -140,6 +140,41 @@ g_queue_clear_full (GQueue * queue, GDestroyNotify free_func)
 
 /* --------------------------------------------------------------------------------------------- */
 
+#if ! GLIB_CHECK_VERSION (2, 77, 0)
+/**
+ * g_string_new_take:
+ * @init: (nullable): initial text used as the string.
+ *     Ownership of the string is transferred to the #GString.
+ *     Passing NULL creates an empty string.
+ *
+ * Creates a new #GString, initialized with the given string.
+ *
+ * After this call, @init belongs to the #GString and may no longer be
+ * modified by the caller. The memory of @data has to be dynamically
+ * allocated and will eventually be freed with g_free().
+ *
+ * Returns: the new #GString
+ */
+GString *
+g_string_new_take (char *init)
+{
+    GString *string;
+
+    if (init == NULL)
+        return g_string_new (NULL);
+
+    string = g_slice_new (GString);
+
+    string->str = init;
+    string->len = strlen (string->str);
+    string->allocated_len = string->len + 1;
+
+    return string;
+}
+#endif /* ! GLIB_CHECK_VERSION (2, 77, 0) */
+
+/* --------------------------------------------------------------------------------------------- */
+
 /**
  * mc_g_string_copy:
  * @dest: (not nullable): the destination #GString. Its current contents are destroyed

lib/glibcompat.h

@@ -25,6 +25,10 @@ void g_clear_list (GList ** list_ptr, GDestroyNotify destroy);
 void g_queue_clear_full (GQueue * queue, GDestroyNotify free_func);
 #endif /* ! GLIB_CHECK_VERSION (2, 60, 0) */
 
+#if ! GLIB_CHECK_VERSION (2, 77, 0)
+GString *g_string_new_take (char *init);
+#endif /* ! GLIB_CHECK_VERSION (2, 77, 0) */
+
 /* There is no such API in GLib2 */
 GString *mc_g_string_copy (GString * dest, const GString * src);
 

src/editor/editsearch.c

@@ -873,7 +873,8 @@ edit_replace_cmd (WEdit * edit, gboolean again)
         edit->search = NULL;
     }
 
-    input2_str = g_string_new (input2);
+    input2_str = g_string_new_take (input2);
+    input2 = NULL;
 
     if (edit->search == NULL)
     {

src/filemanager/layout.c

@@ -1015,8 +1015,7 @@ setup_cmdline (void)
 #ifdef ENABLE_SUBSHELL
     if (mc_global.tty.use_subshell)
     {
-        subshell_prompt = g_string_new (tmp_prompt);
-        g_free (tmp_prompt);
+        subshell_prompt = g_string_new_take (tmp_prompt);
         mc_prompt = subshell_prompt->str;
     }
 #endif

src/filemanager/panel.c

@@ -2353,8 +2353,7 @@ goto_parent_dir (WPanel * panel)
                 mc_build_filename (vfs_path_as_str (panel->panelized_descr->root_vpath), fname->str,
                                    (char *) NULL);
 
-            fname = g_string_new (fname2);
-            g_free (fname2);
+            fname = g_string_new_take (fname2);
         }
 
         bname = x_basename (fname->str);
@@ -5243,8 +5242,7 @@ panel_panelize_cd (void)
 
             tmp_vpath =
                 vfs_path_append_new (pdescr->root_vpath, plist->list[i].fname->str, (char *) NULL);
-            list->list[i].fname = g_string_new (vfs_path_as_str (tmp_vpath));
-            vfs_path_free (tmp_vpath, TRUE);
+            list->list[i].fname = g_string_new_take (vfs_path_free (tmp_vpath, FALSE));
         }
         list->list[i].f.link_to_dir = plist->list[i].f.link_to_dir;
         list->list[i].f.stale_link = plist->list[i].f.stale_link;

src/usermenu.c

@@ -939,11 +939,13 @@ expand_format (const Widget * edit_widget, char c, gboolean do_quote)
                     if (tmp != NULL)
                     {
                         if (block == NULL)
-                            block = g_string_new (tmp);
+                            block = g_string_new_take (tmp);
                         else
+                        {
                             g_string_append (block, tmp);
+                            g_free (tmp);
+                        }
                         g_string_append_c (block, ' ');
-                        g_free (tmp);
                     }
 
                     if (c_lc == 'u')