> On Mar 20, 2017, at 1:41 PM, Quincey Morris 
> <quinceymor...@rivergatesoftware.com> wrote:
> 
> On Mar 20, 2017, at 04:58 , Daryle Walker <dary...@mac.com 
> <mailto:dary...@mac.com>> wrote:
>> 
>>> If all the strings were concatenated together would be the ‘x’ in "fox”.
> 
>> Is there a off-by-one bug with the end of the second string? Or am I really 
>> misunderstanding Apple’s counting strategy? The second string seems to be 
>> only 9 characters long. And shouldn't index 18 point to the first character 
>> of the third string instead?
> 
> There’s clearly an omission in that sentence in the documentation, and it 
> appears to mean to say: If all the strings were concatenated together, the 
> 18th character would be the ‘x’ in “fox”.
> 
> Looking at the example concatenation in the next paragraph, it appears that 
> the expectation is that the “conceptually concatenated string” has spaces 
> inserted between the substrings, and that would account for the extra 
> character in the “fox” text. My guess is that putting conceptual spaces in 
> the conceptual concatenation has something to do with the proper recognition 
> of word boundaries (in some languages), but it’s not clear how that works in 
> practice.
> 

There’s nothing conceptual about; it’s a different bug instead!

A lot of new(-ish) Apple API don’t get guides, but have semi-extensive 
instruction in the AppKit (or whatever) notes for the first version of macOS 
the API premiered. The Mac OS X 10.7 Lion part of the 10.11-and-before AppKit 
notes 
(<https://developer.apple.com/library/content/releasenotes/AppKit/RN-AppKitOlderNotes/index.html#10_7TextFinder>)
 uses this very example, but there is a space character before the “brown”! So 
the problem is there was a transcription error between the AppKit notes and the 
API page. (But there isn’t an extra space before the third string or another 
space either at the end of the third string or the start of the fourth.)

> A bug report would probably be appropriate.

— 
Daryle Walker
Mac, Internet, and Video Game Junkie
darylew AT mac DOT com 

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