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-rw-r--r--pango/pango-tabs.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/pango/pango-tabs.c b/pango/pango-tabs.c
index 73343bc4..aedd9bce 100644
--- a/pango/pango-tabs.c
+++ b/pango/pango-tabs.c
@@ -257,12 +257,13 @@ pango_tab_array_resize (PangoTabArray *tab_array,
/**
* pango_tab_array_set_tab:
* @tab_array: a #PangoTabArray
- * @tab_index: the index of a tab stop, starting from zero
+ * @tab_index: the index of a tab stop
* @alignment: tab alignment
* @location: tab location in Pango units
*
- * Sets the alignment and location of a tab stop. Resizes the
- * tab array if needed.
+ * Sets the alignment and location of a tab stop.
+ * @alignment must always be #PANGO_TAB_LEFT in the current
+ * implementation.
*
**/
void
@@ -273,6 +274,7 @@ pango_tab_array_set_tab (PangoTabArray *tab_array,
{
g_return_if_fail (tab_array != NULL);
g_return_if_fail (tab_index >= 0);
+ g_return_if_fail (alignment == PANGO_TAB_LEFT);
g_return_if_fail (location >= 0);
if (tab_index >= tab_array->size)