/usr/share/gocode/src/golang.org/x/text/internal/colltab/ is in golang-golang-x-text-dev 0.0~git20170627.0.6353ef0-1ubuntu2.
This file is owned by root:root, with mode 0o755.
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/usr/share/gocode/src/golang.org/x/text/internal/colltab/collate_test.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/collelem.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/collelem_test.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/colltab.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/colltab_test.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/contract.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/contract_test.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/iter.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/iter_test.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/numeric.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/numeric_test.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/table.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/trie.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/trie_test.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/weighter.go
/usr/share/gocode/src/golang.org/x/text/internal/colltab/weighter_test.go