I guess it's best to start with an example:
> echo "[20-20:10]Something" | sed -r -e 's/^\[[0-9\:\-]+(.*)$/\1/' ]Something > echo "[20-20:10]Something" | sed -r -e 's/^\[[0-9\-\:]+(.*)$/\1/' -20:10]Something
The only difference is that I swapped
- characters in character class of regex. So: does the order of characters matter in sed's regex's character classes? I doesn't seem to matter on different regex systems, like https://regex101.com/.
I cannot find anything about this behaviour on Google, but I would like to know more, because I want to be sure to know what my scripts do.