degesch: add more tests, bump liberty

The UTF-8 common prefix test discovered a bug in UTF-8 parsing.

Made $[1-9] in aliases insert nothing if there's no argument at that index.

2 files changed, 35 insertions, 9 deletions

diff --git a/degesch.c b/degesch.c
index 2977e09..96d0dc1 100644
--- a/degesch.c
+++ b/degesch.c
@@ -9491,10 +9491,12 @@ expand_alias_escape (const char *p, const char *arguments, struct str *output)
 	cstr_split_ignore_empty (arguments, ' ', &words);
 
 	// TODO: eventually also add support for argument ranges
-	int as_number = *p - '0';
-	if (as_number > 0 && as_number <= 9
-	 && (size_t) as_number <= words.len)
-		str_append (output, words.vector[as_number - 1]);
+	if (*p >= '1' && *p <= '9')
+	{
+		size_t offset = *p - '1';
+		if (offset < words.len)
+			str_append (output, words.vector[offset]);
+	}
 	else if (*p == '*')
 		str_append (output, arguments);
 	else if (strchr ("$;", *p))
@@ -9507,14 +9509,14 @@ expand_alias_escape (const char *p, const char *arguments, struct str *output)
 }
 
 static void
-expand_alias_definition (const struct str *definition, const char *arguments,
+expand_alias_definition (const char *definition, const char *arguments,
 	struct str_vector *commands)
 {
 	struct str expanded;
 	str_init (&expanded);
 
 	bool escape = false;
-	for (const char *p = definition->str; *p; p++)
+	for (const char *p = definition; *p; p++)
 	{
 		if (escape)
 		{
@@ -9550,7 +9552,7 @@ expand_alias (struct app_context *ctx,
 		return false;
 	}
 
-	expand_alias_definition (&entry->value.string, input, commands);
+	expand_alias_definition (entry->value.string.str, input, commands);
 	return true;
 }
 
@@ -11199,11 +11201,26 @@ init_poller_events (struct app_context *ctx)
 
 // --- Tests -------------------------------------------------------------------
 
-// The application is quite monolithic and can only be partially unit-tested
+// The application is quite monolithic and can only be partially unit-tested.
+// Locale-, terminal- and filesystem-dependent tests are also somewhat tricky.
 
 #ifdef TESTING
 
 static void
+test_aliases (void)
+{
+	struct str_vector v;
+	str_vector_init (&v);
+	expand_alias_definition ("/foo; /bar $* $$$;;;$1$2$3$4", "foo bar baz", &v);
+	hard_assert (v.len == 4);
+	hard_assert (!strcmp (v.vector[0], "/foo"));
+	hard_assert (!strcmp (v.vector[1], " /bar foo bar baz $;"));
+	hard_assert (!strcmp (v.vector[2], ""));
+	hard_assert (!strcmp (v.vector[3], "foobarbaz"));
+	str_vector_free (&v);
+}
+
+static void
 test_wrapping (void)
 {
 	struct str_vector v;
@@ -11221,12 +11238,21 @@ test_wrapping (void)
 	str_vector_free (&v);
 }
 
+static void
+test_utf8_prefix (void)
+{
+	static const char *a[] = { "fřoo", "Fřooř", "fřOOŘ" };
+	hard_assert (utf8_common_prefix (a, N_ELEMENTS (a)) == 5);
+}
+
 int
 main (int argc, char *argv[])
 {
 	struct test test;
 	test_init (&test, argc, argv);
-	test_add_simple (&test, "/wrapping", NULL, test_wrapping);
+	test_add_simple (&test, "/aliases",     NULL, test_aliases);
+	test_add_simple (&test, "/wrapping",    NULL, test_wrapping);
+	test_add_simple (&test, "/utf8-prefix", NULL, test_utf8_prefix);
 	return test_run (&test);
 }
 
diff --git a/liberty b/liberty
-Subproject 0adcaf67c23fdc2a5082aa11aefd4fdc0aafd70
+Subproject 5d3e911f015b33d0b4dcc3aa94f7af630438cbf