Upper to Lower Case Regex - I'm stuck!

[Doitsu]

Originally Posted by Bozana

But realised that this works best in Sigil and not Calibre. And this this needs to work in Calibre please.

Sigil and Calibre use different regex engines. In Calibre, you'll need to select the Regex-function mode and the predefined Lower-case text function.

[BetterRed]

↑ ↑ ↑ x-post

Originally Posted by Bozana

. . .

But realised that this works best in Sigil and not Calibre. And this this needs to work in Calibre please. Any help and suggestions would be appricated.

Thank you!

You should raise the issue in the Calibre Editor forum ==>> Calibre Editor.

BR

[Tex2002ans]

Originally Posted by Bozana

I've tried everything above... I need to have a search and replace uppercases in the beggining of a paragrahs. Example:

<p class=subsq">SARAH SNUGGLED DEEPER into Kade’s embrace.</p>

And I need it to be:

<p class=subsq">Sarah snuggled deeper to Kade’s embrace</p>

For your very specific case, if you know you always have the first few words ALL CAPS in your book...

You could do something like:

Find: <p class="subsq">([A-Z])([A-Z’ ]{2,})
Replace: <p class="subsq">\1\L\2

This would find:

• Grab the very first capital letter.
  
  • Assign to Group 1.
• Grab all the other capital letters + apostrophes + spaces.
  
  • Assign to Group 2.

And then replace:

• The very first letter as is.
• Lowercase all the rest of the letters and shove them in.

But I would be very careful with this type of stuff, which is why I do a case-by-case basis replace.

There are TONS of capitalization exceptions that can occur, like:

• First/Last Names
  
  • Sarah, Kade
• Roman Numerals
  
  • King Charles VII
• Acronyms
  
  • DNA, FBI, CIA
• [...]

so you can't just "lowercase everything".

Since this ol' 2014 post, I've since explained and cover tons of ALL CAPS -> Smallcaps + Title Casing stuff:

• 2023: "A.M. and P.M."
• 2019: "Regex examples" (Posts #588 + #590)
• 2022: "How do I get rid of Table of Contents?"

If you type this into your favorite search engine:

smallcaps Tex2002ans site:mobileread.com

or:

acronyms Tex2002ans site:mobileread.com

you can find lots of previous discussion.

Originally Posted by Bozana

But realised that this works best in Sigil and not Calibre. And this this needs to work in Calibre please. Any help and suggestions would be appricated.

Yes, like Doitsu said...

In Calibre, there is a "Regex-Function" Mode now:

• Calibre Manual: "Function mode for Search & replace in the Editor"

There is already a built-in "Lower-case" one.

And, in Sigil, there is now a much more powerful, bleeding-edge, List-Based Search/Replace.

I brainstormed a much faster ALLCAPS-><span class="smallcaps">Smallcaps</span> workflow back in:

• 2021: "Possible To-Do List for Future Sigil Releases Post Sigil 1.8"

but I have yet to write a tutorial on it.

(There have been lots of enhancements in the past 9 years since this original post!!!)

[Turtle91]

There is also a regex function plug-in for Sigil that is similar to Calibre’s. It is more of a proof of concept that someone could polish and hopefully incorporate into Sigil at some point. But it should do the trick for a simple ALLCAPS to Title Case.

[KevinH]

If it needs to work in Calibre, then perhaps asking in that the calibre forum would be a good idea.

[DNSB]

Originally Posted by Bozana

I've tried everything above... I need to have a search and replace uppercases in the beggining of a paragrahs. Example:

<p class=subsq">SARAH SNUGGLED DEEPER into Kade’s embrace.</p>

And I need it to be:

<p class=subsq">Sarah snuggled deeper to Kade’s embrace</p>

I've tired:

Find: ([[:upper:]])([[:upper:]]{1,})
Replace: \1\L\2\E

But realised that this works best in Sigil and not Calibre. And this this needs to work in Calibre please. Any help and suggestions would be appricated.

Thank you!

You do realize that you are posting in a Sigil forum? Perhaps this question would be best asked in the calibre editor subforum? Personally, I use both Sigil and the calibre editor. Sigil is my main editor but there are some tools that calibre has that I make use of.

You might also want to check the syntax difference between the PCRE2 regex used by Sigil and the Python regex used by calibre though I've seen statements that calibre uses PCRE. A useful site would be Regex101 which allows you to test regex using different engines.

And please note that in your example, you would need to manually change kade back to Kade.