Do not clear sibling entries when override.

lokid and hikid actually stores the sibling to current node, which
should not be cleared when override. This would break the sequence with
a common prefix when override another.

Fix #286

Signed-off-by: Weng Xuetian <wengxt@gmail.com>

2 files changed, 22 insertions, 1 deletions

diff --git a/src/compose/parser.c b/src/compose/parser.c
index 69abc49..0bd4571 100644
--- a/src/compose/parser.c
+++ b/src/compose/parser.c
@@ -387,7 +387,7 @@ add_production(struct xkb_compose_table *table, struct scanner *s,
         } else if (!last) {
             if (node->is_leaf) {
                 scanner_warn(s, "a sequence already exists which is a prefix of this sequence; overriding");
-                node->internal.eqkid = node->lokid = node->hikid = 0;
+                node->internal.eqkid = 0;
                 node->internal.is_leaf = false;
             }
             lhs_pos++;
diff --git a/test/compose.c b/test/compose.c
index 35790a3..07914fe 100644
--- a/test/compose.c
+++ b/test/compose.c
@@ -560,6 +560,26 @@ test_include(struct xkb_context *ctx)
     free(table_string);
 }
 
+static void
+test_override(struct xkb_context *ctx)
+{
+    const char *table_string = "<dead_circumflex> <dead_circumflex> : \"foo\" X\n"
+                               "<dead_circumflex> <e> : \"bar\" Y\n"
+                               "<dead_circumflex> <dead_circumflex> <e> : \"baz\" Z\n";
+
+    assert(test_compose_seq_buffer(ctx, table_string,
+        /* Comes after - does override. */
+        XKB_KEY_dead_circumflex, XKB_COMPOSE_FEED_ACCEPTED,  XKB_COMPOSE_COMPOSING,  "",     XKB_KEY_NoSymbol,
+        XKB_KEY_dead_circumflex, XKB_COMPOSE_FEED_ACCEPTED,  XKB_COMPOSE_COMPOSING,  "",     XKB_KEY_NoSymbol,
+        XKB_KEY_e,               XKB_COMPOSE_FEED_ACCEPTED,  XKB_COMPOSE_COMPOSED,   "baz",  XKB_KEY_Z,
+
+        /* Override does not affect sibling nodes */
+        XKB_KEY_dead_circumflex, XKB_COMPOSE_FEED_ACCEPTED,  XKB_COMPOSE_COMPOSING,  "",     XKB_KEY_NoSymbol,
+        XKB_KEY_e,               XKB_COMPOSE_FEED_ACCEPTED,  XKB_COMPOSE_COMPOSED,   "bar",  XKB_KEY_Y,
+
+        XKB_KEY_NoSymbol));
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -575,6 +595,7 @@ main(int argc, char *argv[])
     test_state(ctx);
     test_modifier_syntax(ctx);
     test_include(ctx);
+    test_override(ctx);
 
     xkb_context_unref(ctx);
     return 0;