geany/geany — comment on commit 82146e953fa1bd41611ae1414159491818c412d7
File:  line 0
By eht16:

Unfortunately I do not remember. But this limit seems like I set it, I can well imagine I did this :D.
Not exactly sure why though. But this whole code changed quite a bit during the years and maybe this is just a left-over from some older stage where we used static strings, maybe buffers of size 255 and wanted to keep some room for something. No idea, this is my best guess.