Problem with dIsSpace with UTF8 text

[lukaspj]

This issue was created in the GarageGames Repository (Link to original issue).
The issue was originally created by @jamesu and had a total of 2 comments that may contain additional information. The original issue description is pasted below:

If you attempt to use dIsspace on UTF8 text which uses high ranged unicode characters (e.g. japanese text), you may get an assert in a DEBUG build on windows due to the character value being out of range for ASCII. This prevents such text from being passed to several functions making it slightly impractical to use international text in Torque3D, at least in windows.

I should also note that technically calling dIsspace on a UTF8 character is not quite correct as there are several space characters in unicode which don't fit into a single UTF8 character.

Affected functions:

• TrimFirstWord
• CodeBlock::exec (OP_ITER)
• isspace ConsoleFunction
• sParseList
• sGetArgNameAndType
• Namespace::Entry::getDocString
• parseFunctionArgumentNames
• GFont::wrapString
• GFXGLShader::_handleIncludes
• GuiTextEditCtrl::findPrevWord
• String::trim
• String::GetTrailingNumber
• nat_isspace
• SplitSequencePathAndName