Scintillua PrivateLexerCall API Changes

[orbitalquark]

I've just committed some API changes that will likely affect users embedding Scintillua into their Scintilla-based applications. Scintilla 5.0.1 removed a couple of lexer APIs: SCI_SETLEXERLANGUAGE and SCI_LOADLEXERLIBRARY. Scintillua's LPeg lexer uses the SCI_PRIVATELEXERCALL interface for functionality like getting/setting the lexer, querying lexer and style names, etc. Such calls reuse existing Scintilla constants for convenience -- clients like SciTE that expose a script interface can make private lexer calls without needing any special #defines or magic constants. A consequence of the Scintilla 5.0.1 API changes is that Scintillua's API also must change. Since API compatibility cannot be maintained, I took the opportunity to reshuffle 4 private lexer calls:

• SCI_SETLEXERLANGUAGE -> SCI_SETILEXER (set lexer name)
• SCI_LOADLEXERLIBRARY -> SCI_CREATELOADER (add path to Lua lexers)
• SCI_GETLEXERLANGUAGE -> SCI_GETLEXER (get current lexer name)
• SCI_PROPERTYNAMES -> SCI_GETLEXERLANGUAGE (get list of known lexers)

If your application uses Scintillua and calls SCI_PRIVATELEXERCALL with any of these constants, you will have to make the necessary substitutions. As an example, Textadept had to make some changes. They're a bit more abstract than the usual C/C++ API calls, but you get the idea.

Let me know if you have any questions or experience any difficulties. It is possible there will be more changes while the Scintilla 5 API remains unstable, but hopefully this is it for Scintillua.