the gui version needs wine if you want to run it in linux.
yes, many people are fine with whatever fancy text editors they want, with fteqcc as purely a compiler, but fteqccgui is a debugger as well as just a text-editor-with-compiler. If you're (primarily) developing for fteqw then fteqccgui's single-stepping stuff can be quite handy (as well as f7 auto-restarting the map), otherwise its not a huge loss.
I'd write a more portable version of the gui, but I hate writing guis and I'm basically too lazy to restart it from scratch.
but yeah, using wine for the non-gui version of fteqcc is just pointless.

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