CarLaTeX
In Section *60.3 Delimiters* of the [TikZ-PGF manual](https://www.ctan.org/pkg/pgf) is written:
> The <*delimiter*> can be any delimiter that is acceptable to TEX’s `\left` command.
Which are all the delimiters acceptable to TEX’s `\left` command?

Top Answer

joulev
There are 22 TeX *basic* delimiters and some more 'special' delimiters. They are documented in *The TeXBook*:
* [0] The 'blank' delimiter `.`.
* [1-2] Parentheses `(` – `)`
* [3-4] Brackets `[` or `\lbrack` – `]` or `\rbrack`
* [5-6] Braces `\{` or `\lbrace` – `\}` or `\lbrace`
* [7-8] Floors `\lfloor` – `\rfloor`
* [9-10] Ceils `\lceil` – `\rceil`
* [11-12] Angles `<` or `\langle` – `>` or `\rangle`
* [13-14] Slashes `/` – `\backslash`
* [15] Vertical bars `|` or `\vert`
* [16] Double vertical bars `\|` or `\Vert`
* [17-22] Arrows `\uparrow`, `\Uparrow`, `\downarrow`, `\Downarrow`, `\updownarrow`, `\Updownarrow`
* [23-29] Some special things I have never seen anywhere else but in *The TeXBook*: `\arrowvert`, `\Arrowvert`, `\bracevert`, `\lgroup`, `\rgroup`, `\lmoustache`, `\rmoustache`