How to find text within brackets with some exceptions by regular expressions?

Question

I have a regex /^\[(text:\s*.+?\s*)\]/mi that currently works in capturing text in brackets that begin with text:. Here is an example where it works:

[text: here is my text that is
captured within the brackets.]

Now, I would like to add an exception so that it allows certain brackets like in the case below:

[text: here is my text that is
captured within the brackets
and also include ![](/some/path)]

Basically, I need it to allow the ![](/some/path) brackets in the match.

Any help would be greatly appreciated. Thanks.

Update:

Here are some cases where the text inside the brackets should be matched:

[text: here is my text that is
captured within the brackets
and also include ![](/some/path)]

[text: here is my text that is
captured within the brackets
and also include ![](/some/path) and some more text]

[text: ![](/some/path)]

![text: cat]

Here are some cases where it should not match:

[text: here is my text that is
captured within the brackets
and also include ![invalid syntax](/some/path)]

[text: here is my text that is
captured within the brackets
and also include ![] (/some/path)]

[text: here is my text that is
captured within the brackets
and also include ! [](/some/path)]

[text: here is my text that is
captured within the brackets
and also include ! [] (/some/path)]

Answer 1

OK, so you want to allow either

• a character that's not a bracket or
• the sequence ![]

between the starting and ending bracket. This gives you the regex

/^\[(text:[^\[\]]*(?:!\[\][^\[\]]*)*)\]/mi

Explanation:

^           # Start of line
\[          # Match [
(           # Start of capturing group
 text:      # Match text:
 [^\[\]]*   # Match any number of characters except [ or ]
 (?:        # Optional non-capturing group:
  !\[\]     #  Match ![]
  [^\[\]]*  #  Match any number of characters except [ or ]
 )*         # Repeat as needed (0 times is OK)
)           # End of capturing group
\]          # Match ]

Test it live on regex101.com.