Patches to improve compatibility with modern C++ standard

[Richard Kimberly Heck]

On 5/4/20 7:18 PM, Richard Kimberly Heck wrote:
> On 5/4/20 4:16 PM, Thibaut Cuvelier wrote:
>> I changed the code to use more often the ::find() functions and
>> similar. In TextClass, I had to add new methods. That's the included
>> patch, which replaces two of the previous patches.
>
> Thanks. The use of find() is great.
>
I've pushed those parts of the patches.

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