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tpl: Fix reflection bug in merge
Value.Type().Key() must only be called on map values. Fixes #7899
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2 changed files with 13 additions and 0 deletions
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@ -106,6 +106,10 @@ func mergeMap(dst, src reflect.Value) reflect.Value {
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dve := dv.Elem()
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if dve.Kind() == reflect.Map {
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sve := sv.Elem()
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if sve.Kind() != reflect.Map {
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continue
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}
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if dve.Type().Key() == sve.Type().Key() {
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out.SetMapIndex(key, mergeMap(dve, sve))
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}
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@ -111,6 +111,15 @@ func TestMerge(t *testing.T) {
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},
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maps.Params{"a": 1, "b": maps.Params{"d": 1, "e": 2, "f": 3}, "c": 3}, false,
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},
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{
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// https://github.com/gohugoio/hugo/issues/7899
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"matching keys with non-map src value",
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[]interface{}{
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map[string]interface{}{"k": "v"},
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map[string]interface{}{"k": map[string]interface{}{"k2": "v2"}},
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},
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map[string]interface{}{"k": map[string]interface{}{"k2": "v2"}}, false,
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},
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{"src nil", []interface{}{nil, simpleMap}, simpleMap, false},
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// Error cases.
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{"dst not a map", []interface{}{nil, "not a map"}, nil, true},
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