Truncated floor symbol

Question

The Unicode characters ⸤ (U+2E24) and ⸥ (U+2E25) are sometimes used to groups words together in syntactic analysis. For example:

⸤The daughter ⸤of my brother⸥ ⸥ sees ⸤an orange tree⸥ ⸤with her binoculars⸥.

I am using LuaLaTeX and would like to keep using the Computer Modern font, but it doesn't seem to include these codepoints (they render as spaces). I can see several workarounds, but I don't know how to implement any of them:

• Rotate tipa's \textcorner;
• Truncate $\lfloor$ and $\rfloor$;
• Steal those specific characters from a font that does support them.

Any of these works for me. Good to note: I'm using csquotes with \MakeOuterQuote{"}, so \char"2E24 as suggested here won't work.

---

For what it's worth, a very minimal example:

\documentclass{article}
\usepackage{csquotes}
\MakeOuterQuote{"}
\begin{document}
"⸤The daughter ⸤of my brother⸥ ⸥ sees ⸤an orange tree⸥ ⸤with her binoculars⸥."
\end{document}

Answer 1

Borrow them.

\documentclass{article}
\usepackage{fontspec}
\usepackage{newunicodechar}

\newfontface{\lowbrackets}{Noto Sans}
\NewDocumentCommand{\blhb}{}{{\lowbrackets\symbol{"2E24}}}
\NewDocumentCommand{\brhb}{}{{\lowbrackets\symbol{"2E25}}}

\newunicodechar{⸤}{\blhb}
\newunicodechar{⸥}{\brhb}

\begin{document}

⸤The daughter ⸤of my brother⸥⸥ sees ⸤an orange tree⸥ ⸤with her binoculars⸥.

\end{document}

Answer 2

Here an approach using lowered pmboxdraw characters. Still a bit too big maybe but an easy solution.

I added a bit of "poor man's kerning" to put the characters closer to the letters.

\documentclass{article}
\usepackage{newunicodechar}
\usepackage{graphicx}
\usepackage{pmboxdraw}
\usepackage{csquotes}
\MakeOuterQuote{"}
\newunicodechar{⸤}{\smash{\raisebox{-4pt}{\textSFii}\hskip-1pt}}
\newunicodechar{⸥}{\hskip-1pt\smash{\raisebox{-4pt}{\textSFiv}}}
\begin{document}
\noindent "⸤The daughter ⸤of my brother⸥ ⸥ sees ⸤an orange tree⸥ ⸤with her binoculars⸥."

\noindent "Furthermore the moon is made of cheese, that's why astronauts bounce on it."
\end{document}

Version without the fake kerning:

With clipping:

\usepackage{trimclip}
\newunicodechar{⸤}{\smash{\clipbox{0pt 0pt 0pt 2.5pt}{\raisebox{-4pt}{\textSFii}}\hskip-1pt}}
\newunicodechar{⸥}{\hskip-1pt\smash{\clipbox{0pt 0pt 0pt 2.5pt}{\raisebox{-4pt}{\textSFiv}}}}

Answer 3

Since the other answers are using newunicodechar, I figured I'd give it a shot myself by combining that with Barbara Beeton's suggestion. The output is below. Pro: the line thickness is the same on the vertical and the horizontal stroke. Con: the horizontal looks longer than the vertical, which I don't like.

Edit: the latter turns out to be an optical illusion. They are the same length zoomed-in. This doesn't really matter though; I still want the bracket to look taller than it is wide.

\documentclass{article}
\usepackage{csquotes}
\MakeOuterQuote{"}

\usepackage{newunicodechar}
\usepackage{unicode-math}
\newunicodechar{⸤}{\hskip-1.25pt$\llcorner$\hskip-1.25pt}
\newunicodechar{⸥}{\hskip-1.25pt$\lrcorner$}

\begin{document}
⸤The daughter ⸤of my brother⸥ ⸥ sees ⸤an orange tree⸥ ⸤with her binoculars⸥.
\end{document}