About saved searches and regex

[kovidgoyal]

Originally Posted by DiapDealer

The upcoming function mode sounds like it's going to be terribly useful.

Function mode is really just a new way to create simple editor plugins that dont have any UI

[DiapDealer]

That's good stuff. Looking forward to it!

[arspr]

Originally Posted by Papirus

They are written in PCRE, so they should be adapted to python.

I suppose I am a complete noob but...

aren't we talking about REGEX expressions? I mean, OK, some of them won't work, will need adaptations or whatever, but the majority of your work should be fully valid despite of the different search engines, don't they?

[mikefulton]

After people have had time to play around and come up with some canned recipes, the function mode should be awfully cool.

Originally Posted by kovidgoyal

@Papirus: Thankfully, calibre's editor is written in python so you dont have to create that unreadable gunk to do something like change case for roman numerals. Using the upcoming function mode, all you need is

Find: (?i)\b([ivclm]+)\b
Replace:

def replace(match, context):
    word = match.group()
    if word.lower() not in {set of common words}:
         word = word.upper()
    return word

I tried this regex-function. It returned an error that line 3 was not valid Python code. (Invalid syntax) What's wrong?

[kovidgoyal]

set of common words is a placeholder.

[EbookMakers]

Is version 5 regex engine the same as in previous versions? If it has changed, what is the version of the new engine? Thank you.

[kovidgoyal]

Its the same engine though obviously its version has been bumped, if you need to see the versions of any of calibre's dependencies look in the sources.json file in the calibre source code.