you can configure msvc to invoke external programs somehow. the ui for that has probably been changed completely since I last used msvc though.
when invoking fteqcc in this way be sure to use the '-fmsvcstyle' argument in order to have fteqcc spit out the error/warning output that msvc requires for being able to double-click errors/etc to jump to the lines indicated. otherwise it'll probably just ignore your attempts.


syntax highlighting is provided by the third-party scintilla component. if that wasn't enabled at compile time(read: because you compiled it yourself) then you get no syntax colouring - and a much worse editor experience too. all gui builds on TTH include it. 

Has anybody created a (open source) mod of info_intermission that allows the mapper to point to a text file and make it print the contents on level change? Or one that achieves a similar effect to Quake's end of episode texts but without having to hardcode the text? 

You could make use of the trigger_boss_gate.

This are the logic endings of an episode and switch with one of the four end runes to the text file, as they are used to complete the cycle.

Only thing you also have to do is change the progs.dat with a texteditor and use the same amount of text and replace it with your own.