/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/ is in golang-github-alecthomas-chroma-dev 0.4.0+git20180402.51d250f-1.
This file is owned by root:root, with mode 0o755.
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/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/make.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/mako.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/markdown.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/mason.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/mathematica.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/minizinc.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/modula2.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/mwscript.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/myghty.go
/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/m/mysql.go