[clang] [clang][doc]: Merge the contents of identical entries. (PR #134089)

[Erich Keane via cfe-commits]

erichkeane wrote:

> > > Oh yeah, that is not a good outcome. :-) I think Undocumented is a special case. For this patch, I would not merge if the category is Undocumented.
> > 
> > 
> > @AaronBallman Oh, I forgot the other merged entry that is slightly smaller compared to `Undocumented` like this:
> > ![屏幕截图 2025-04-04 200659](https://private-user-images.githubusercontent.com/170909871/430370536-f04e1099-966d-4158-9ddb-1b130a795146.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDM3Njk1MzAsIm5iZiI6MTc0Mzc2OTIzMCwicGF0aCI6Ii8xNzA5MDk4NzEvNDMwMzcwNTM2LWYwNGUxMDk5LTk2NmQtNDE1OC05ZGRiLTFiMTMwYTc5NTE0Ni5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwNDA0JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDQwNFQxMjIwMzBaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1jZjcxOGYwZmY2NjRhOGEyNjEzMTRiNDg4MWRiMGE5MzRjZjgxOGUwMDE4OWE3NTA3OTczMTA1YjMxYmMzN2E0JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.Zrz8vKcU3KNaBeusO8vphWEoYeFDeWNOXuOIFrcviOg)
> > ![屏幕截图 2025-04-04 195903](https://private-user-images.githubusercontent.com/170909871/430370018-b0f155a9-233f-4b98-b20c-8f8343516197.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDM3Njk1MzAsIm5iZiI6MTc0Mzc2OTIzMCwicGF0aCI6Ii8xNzA5MDk4NzEvNDMwMzcwMDE4LWIwZjE1NWE5LTIzM2YtNGI5OC1iMjBjLThmODM0MzUxNjE5Ny5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwNDA0JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDQwNFQxMjIwMzBaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1lMmYyYmY0ODMwNzY4YmEyYjYwZWE1MTkxYzQ5ODQ0OGE0MzE0YjNkMTcwNzdlNWQzNTU3ZDMzZDA1OTFmZTE5JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.jWlLLrHy_hbiP9pPhWPVoVvQAgIQ3OzI9ziG45OuJyY)
> > Similarly, it doesn't look very pretty.
> 
> > > Oh yeah, that is not a good outcome. :-) I think Undocumented is a special case. For this patch, I would not merge if the category is Undocumented.
> > 
> > 
> > @AaronBallman Oh, I forgot the other merged entry that is slightly smaller compared to `Undocumented` like this:
> > ![屏幕截图 2025-04-04 200659](https://private-user-images.githubusercontent.com/170909871/430370536-f04e1099-966d-4158-9ddb-1b130a795146.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDM3Njk1MzAsIm5iZiI6MTc0Mzc2OTIzMCwicGF0aCI6Ii8xNzA5MDk4NzEvNDMwMzcwNTM2LWYwNGUxMDk5LTk2NmQtNDE1OC05ZGRiLTFiMTMwYTc5NTE0Ni5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwNDA0JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDQwNFQxMjIwMzBaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1jZjcxOGYwZmY2NjRhOGEyNjEzMTRiNDg4MWRiMGE5MzRjZjgxOGUwMDE4OWE3NTA3OTczMTA1YjMxYmMzN2E0JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.Zrz8vKcU3KNaBeusO8vphWEoYeFDeWNOXuOIFrcviOg)
> > ![屏幕截图 2025-04-04 195903](https://private-user-images.githubusercontent.com/170909871/430370018-b0f155a9-233f-4b98-b20c-8f8343516197.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3NDM3Njk1MzAsIm5iZiI6MTc0Mzc2OTIzMCwicGF0aCI6Ii8xNzA5MDk4NzEvNDMwMzcwMDE4LWIwZjE1NWE5LTIzM2YtNGI5OC1iMjBjLThmODM0MzUxNjE5Ny5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjUwNDA0JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI1MDQwNFQxMjIwMzBaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1lMmYyYmY0ODMwNzY4YmEyYjYwZWE1MTkxYzQ5ODQ0OGE0MzE0YjNkMTcwNzdlNWQzNTU3ZDMzZDA1OTFmZTE5JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCJ9.jWlLLrHy_hbiP9pPhWPVoVvQAgIQ3OzI9ziG45OuJyY)
> > Similarly, it doesn't look very pretty.
> 
> CC @erichkeane for opinions, but I think this is... ugly-but-reasonable. Ideally, I'd like to see those split off (cf in one group, ns in another, etc) with different documentation given that these are presumably doing different things. But as it stands, I think this is better than repeating the same information 15 times.

Ooof, that last one is frustrating.  That just SCREAMS to me people re-using 'generic' documentation for a ton of things.  I'm pretty grumpy about THAT.

However, that is a vast improvement.

As far as Undocumented, I like the idea of merging them into 1 table like the rest, but I would actually suggest that we just remove the 'header' that lists all the names (or change it to 'undocumented attributes'). 

WDYT? (could be done in a followup).

https://github.com/llvm/llvm-project/pull/134089