hintonda added a comment.

In https://reviews.llvm.org/D39436#911260, @jingham wrote:

> I don't like this change.
>
> First off, the whole point of having options in the commands is so that we 
> don't have to have magic encodings in the values.
>
> We also don't have FileSpec's that resolve to multiple files.  What do 
> "Exists", "IsExecutable",  "GetPath" etc. mean in this context?  There would 
> have to be a really strong reason for making this kind of change.  Just 
> avoiding an extra option does not warrant this change so far as I can see.


It seems that FileSpec already has a dual role, and can be either a search 
criteria (possibly representing multiple files) or a resolved file.

The former is used with the '-f' and '-s' parameters, and can easily match 
multiple files, e.g.: if I pass '-f "foo.cpp"', with no directory, it'll match 
every foo.cpp file included in the target or loaded module.  I'd need to check, 
but I think 'Exists', 'IsExecutable', and 'GetPath' would still work as 
expected.


https://reviews.llvm.org/D39436



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