export all grep styles applied in a paragraph

Like Eugene, I'm trying to imagine why you'd want to do this. No matter why you'd want to extract all GREP Styles as a CSV, it's possible to automate the process with Javascript. There are a few ways to go about it, but the core of it would rely on something like this:

app.activeDocument.paragraphStyles.itemByName("putYourStyleNameHere").nestedGrepStyles[0].grepExpression;

This is just from my brief experimentation; to turn it into working code, I'd need to loop through all parastyles, and then while processing each parastyle, loop through all the nestedGrepStyles.

But if I were in your shoes, I'd use a very different approach. I'd do the extraction one regex at a time, and I'd just use AutoHotkey to automate the process of copying a single regex out of the Paragraph Style dialog, pasting it into My Preferred Raw Text Editor, and I'd write a second script to automate pasting it back in. This is mostly because I have found that I like to see the immediate effects of an altered regular expression, and the idea that I'd need to reimport a whole document's worth of regular expressions all at once doesn't really fill me with confidence. If you make a mistake in a regex, how do you find the responsible expression? Seems a little awkward, to me, but I'm sure you have your reasons. 

PC or Mac?

Hi @uniq1:

There is a script from @Kasyan Servetsky that should do it.

Here is a link: http://kasyan.ho.ua/indesign/export/export_styles_description_settings_to_csv.html. I know it says CS3–CC 2014 but he is still active on the forums so if there is a new version, he may be able to stop by and provide a link. In the meantime, it can't hurt to try it. 

~Barb

If you have them as paragraph styles - you can use the Paragraph Panel to Load Styles - and then load the styels from any other document.

These styles contain the GREP codes you need.