You can adjust the minimum length by changing the + to {2,} which will match 
strings of 2 or more capital letters.

Find: (?-i)(?<=\b)([A-Z]{2,})(?=\b)
Replace: \L\1

[fletcher]


> On Jun 13, 2023, at 10:00 AM, 'Andy Nickless' via BBEdit Talk 
> <[email protected]> wrote:
> 
> Thank you Fletcher - that's a big improvement!
> It will help me a lot.
> Is there a way to avoid it finding single capitals - like "I" (capital i) or 
> "A"?
> Andy
> On Tuesday, 13 June 2023 at 17:45:02 UTC+1 Fletcher Sandbeck wrote:
>> You could try modifying it like this. Changing \b to (?<=\b) makes it so the 
>> match starts at a word boundary but does not include the word boundary in 
>> the match. With the corresponding change to (?=\b) at the end of the pattern 
>> this prevents the spaces being part of the match so should prevent the 
>> alternating behavior. 
>> 
>> And then (?-i) tells it to be case sensitive so you don't need to worry 
>> about the dialog setting. 
>> 
>> Find: (?-i)(?<=\b)([A-Z]+)(?=\b)
>> Replace: \L\1
>> 
>> [fletcher]
>> 
>>> On Jun 13, 2023, at 9:33 AM, 'Andy Nickless' via BBEdit Talk 
>>> <[email protected] <>> wrote:
>>> 
>>> Thank you Kaveh,
>>> It’s an ongoing project, so any improvement would be very welcome.
>>> Andy
>>> 
>> 
>>> On Tuesday, 13 June 2023 at 15:21:50 UTC+1 Kaveh Bazargan wrote:
>>>> I can look again if it helps. is the job done or useful to have these 
>>>> enhancements added too?
>>>> 
>>>> On Tue, 13 Jun 2023 at 14:40, 'Andy Nickless' via BBEdit Talk 
>>>> <[email protected] <>> wrote:
>>>>> Thanks once again, Kaveh.
>>>>> 
>>>>> I tried the search:  \b([A-Z]+)\b
>>>>> and replace: \L\1
>>>>> It left two word spaces before the lowercase word.
>>>>> 
>>>>> When I changed the search to:  ([A-Z]+) with word spaces before and 
>>>>> after, it did a great job as long as I used the Replace & Find button, 
>>>>> but it had one or two quirks. For instance, if you had consecutive 
>>>>> uppercase words, it would only find alternate ones.
>>>>> Also, it didn't find capitalised words with commas, full-stops 
>>>>> exclamation marks or question marks. That would be useful.
>>>>> Lastly, it also found the word I (capitalised, of course) which I didn't 
>>>>> want it to.
>>>>> 
>>>>> I hope I'm not being too greedy!
>>>>> Thanks so much for your help so far, it's saved me quite a lot of time.
>>>>> 
>>>>> On Tuesday, 13 June 2023 at 13:42:14 UTC+1 Kaveh Bazargan wrote:
>>>>>> Try this:
>>>>>> 
>>>>>> search: \b([A-Z]+)\b
>>>>>> replace: \L\1
>>>>>> 
>>>>>> case sensitive
>>>>>> 
>>>>>> On Tue, 13 Jun 2023 at 13:25, 'Andy Nickless' via BBEdit Talk 
>>>>>> <[email protected] <>> wrote:
>>>>>>> I have some text with random uppercase words (for emphasis) and I want 
>>>>>>> BBEdit to find them and replace them with lower case words.
>>>>>>> I ONLY want to change words in which ALL the letters are uppercase - in 
>>>>>>> other words, leave the capital letters at the beginning of sentences 
>>>>>>> and names etc.
>>>>>>> 
>>>>>>> As an example, if my sentence is:
>>>>>>> The BIG CAT called George, sat on the DARK BROWN mat.
>>>>>>> 
>>>>>>> I would like it to look like this:
>>>>>>> The big cat called George, sat on the dark brown mat.
>>>>>>> 
>>>>>>> Any help with this will be greatly appreciated.
>>>>>>> Andy
>>>>>>> 
>>>>>> 
>>>>>>> -- 
>>>>>>> This is the BBEdit Talk public discussion group. If you have a feature 
>>>>>>> request or need technical support, please email "[email protected] 
>>>>>>> <>" rather than posting here. Follow @bbedit on Twitter: 
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>>>>>>>  
>>>>>>> <https://groups.google.com/d/msgid/bbedit/506999f0-7cce-435b-beaf-d5b0ca197b47n%40googlegroups.com?utm_medium=email&utm_source=footer>.
>>>>>> 
>>>>>> 
>>>>>> -- 
>>>>>> Kaveh Bazargan PhD
>>>>>> Director
>>>>>> River Valley Technologies <http://rivervalley.io/> ● Twitter 
>>>>>> <https://twitter.com/rivervalley1000> ● LinkedIn 
>>>>>> <https://www.linkedin.com/in/bazargankaveh/> ● ORCID 
>>>>>> <https://orcid.org/0000-0002-1414-9098> ● @[email protected] 
>>>>>> <https://mastodon.social/@kaveh1000>
>>>>>> Accelerating the Communication of Research
>>>>>>  
>>>>>> <https://www.linkedin.com/posts/bazargankaveh_ismte-innovation-award-recipient-kaveh-bazargan-activity-7039348552526921728-XAEB/?utm_source=share&utm_medium=member_desktop>
>>>>>>    
>>>>>> <https://rivervalley.io/gigabyte-wins-the-alpsp-scholarly-publishing-innovation-award-using-river-valleys-publishing-technology/>
>>>>> 
>>>>> 
>>>>> -- 
>>>>> This is the BBEdit Talk public discussion group. If you have a feature 
>>>>> request or need technical support, please email "[email protected] <>" 
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>>>>>  
>>>>> <https://groups.google.com/d/msgid/bbedit/e2a1b3dc-ed10-4ade-a4fd-b0cced8a962fn%40googlegroups.com?utm_medium=email&utm_source=footer>.
>>>> 
>>>> 
>>>> -- 
>>>> Kaveh Bazargan PhD
>>>> Director
>>>> River Valley Technologies <http://rivervalley.io/> ● Twitter 
>>>> <https://twitter.com/rivervalley1000> ● LinkedIn 
>>>> <https://www.linkedin.com/in/bazargankaveh/> ● ORCID 
>>>> <https://orcid.org/0000-0002-1414-9098> ● @[email protected] 
>>>> <https://mastodon.social/@kaveh1000>
>>>> Accelerating the Communication of Research
>>>>  
>>>> <https://www.linkedin.com/posts/bazargankaveh_ismte-innovation-award-recipient-kaveh-bazargan-activity-7039348552526921728-XAEB/?utm_source=share&utm_medium=member_desktop>
>>>>    
>>>> <https://rivervalley.io/gigabyte-wins-the-alpsp-scholarly-publishing-innovation-award-using-river-valleys-publishing-technology/>
>>> 
>>> 
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>> 
> 
> 
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