/usr/share/tcltk/tcllib1.16/textutil/ is in tcllib 1.16-dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/tcltk/tcllib1.16/textutil/adjust.tcl
/usr/share/tcltk/tcllib1.16/textutil/dehypht.tex
/usr/share/tcltk/tcllib1.16/textutil/eshyph_vo.tex
/usr/share/tcltk/tcllib1.16/textutil/expander.tcl
/usr/share/tcltk/tcllib1.16/textutil/ithyph.tex
/usr/share/tcltk/tcllib1.16/textutil/pkgIndex.tcl
/usr/share/tcltk/tcllib1.16/textutil/repeat.tcl
/usr/share/tcltk/tcllib1.16/textutil/split.tcl
/usr/share/tcltk/tcllib1.16/textutil/string.tcl
/usr/share/tcltk/tcllib1.16/textutil/tabify.tcl
/usr/share/tcltk/tcllib1.16/textutil/textutil.tcl
/usr/share/tcltk/tcllib1.16/textutil/trim.tcl