RegEx for pascal

I would like to suggest some improvements to your parser, but would need some help to make some modifications in the pascal file first as a proof of concept.

I have programmed a parser for AHK in AHK and started now to translate it to Pascal for ParseAHK().

To do this, I would like to ask for some assistance from you, since I do not know the pascal language. In the parser for the code explorer you used a function ParseAndAddNode() that uses as one of their parameters a regex string.
1) What is the command(s) in Pascal that is/are used for regex. In AHK RegExMatch and RegExReplace exist.

In addition I would also need to know if pascal has
2) a command that removes a number of characters from that left or right side of a string
3) a ternary operator?
4) a command that finds a string in another string

If 3) and 4) do not exist, then I could use if or regex to do it, respectively. But for 1) and 2) I would need definitively some help. Looking at Pascal tutorials on the internet I haven't found any good resource (yet).

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Ciao
toralf

Parser is made as simple as possible to turn into user defined parser into future.
If I will allow some individual hard coded string manipulation, this step wont be possible.