Problem
codedb_glob treats brace alternatives literally, so agent-style patterns such as **/*.{yaml,yml} return no matches even when indexed .yaml and .yml files exist. This is confusing because users commonly use shell-style brace alternatives when surveying related extensions.
The same matcher backs MCP path filters, so path_glob has the same limitation.
Failing Test
test "issue-511: glob supports brace alternatives" {
var explorer = Explorer.init(testing.allocator, Explorer.DEFAULT_CONTENT_CACHE_CAPACITY);
defer explorer.deinit();
try explorer.indexFile(".github/workflows/release.yml", "name: release");
try explorer.indexFile("config.yaml", "name: app");
try explorer.indexFile("docs/readme.md", "# docs");
const matches = try explorer.globPaths(testing.allocator, "**/*.{yaml,yml}", 10);
defer testing.allocator.free(matches);
try testing.expectEqual(@as(usize, 2), matches.len);
try testing.expectEqualStrings(".github/workflows/release.yml", matches[0]);
try testing.expectEqualStrings("config.yaml", matches[1]);
try testing.expect(mcp_mod.globMatch("src/{mcp,explore}.zig", "src/mcp.zig"));
try testing.expect(mcp_mod.globMatch("src/{mcp,explore}.zig", "src/explore.zig"));
try testing.expect(!mcp_mod.globMatch("src/{mcp,explore}.zig", "src/main.zig"));
}Verification before the fix:
zig build test-query -Dtest-filter="issue-511"
expected 2, found 0
Expected
codedb_glob and MCP path_glob should support simple comma-separated brace alternatives such as **/*.{yaml,yml} without requiring multiple tool calls.
Fix
Teach the shared glob matcher to evaluate simple {a,b} alternatives while preserving existing *, **, and ? semantics. Malformed or non-alternative braces should continue to behave as literal characters.
Problem
codedb_globtreats brace alternatives literally, so agent-style patterns such as**/*.{yaml,yml}return no matches even when indexed.yamland.ymlfiles exist. This is confusing because users commonly use shell-style brace alternatives when surveying related extensions.The same matcher backs MCP path filters, so
path_globhas the same limitation.Failing Test
Verification before the fix:
Expected
codedb_globand MCPpath_globshould support simple comma-separated brace alternatives such as**/*.{yaml,yml}without requiring multiple tool calls.Fix
Teach the shared glob matcher to evaluate simple
{a,b}alternatives while preserving existing*,**, and?semantics. Malformed or non-alternative braces should continue to behave as literal characters.