Regular expression to replace square brackets with angle brackets

Question

I have a string like:

[a b=\"c\" d=\"e\"]Some multi line text[/a]

Now the part d=\"e\" is optional. I want to convert such type of

Answer 1

Would some multiline text include [ and ]? If not, you can just replace [ with < and ] with > using string.replace - no need of regex.

Update: If it can be anything but [/a], you can replace

^\[a([^\]]+)](.*?)\[/a]$

with

$2

I haven't escaped ] and / in the regex - escape them if necessary to get

^\[a([^\]]+)\](.*?)\[\/a\]$