math.rst: remove stray mention of -- separator from synopsis

The -- is not special here and we don't mention it in other synopses.

It was originally added for a good reason in 98449fec5 (fix `math`
regression, 2017-07-14), along this addition to math.rst:

> You should always place a `--` flag separator before the expression. [...]

However, since 56d913453 (Cache math expressions, 2017-08-24) that
line was changed to

> You don't need to use `--` before the expression even if it begins with a minus sign [...]
This commit is contained in:
Johannes Altmanninger 2022-01-09 09:23:29 +01:00
parent 6df86c6c23
commit 19aebebb95

View File

@ -6,7 +6,7 @@ math - perform mathematics calculations
Synopsis
--------
``math`` [**-s** | **--scale** *N*] [**-b** | **--base** *BASE*] [--] *EXPRESSION...*
``math`` [**-s** | **--scale** *N*] [**-b** | **--base** *BASE*] *EXPRESSION...*
Description