https://gitlab.synchro.net/main/sbbs/-/commit/321118d1b3d2d329310684ce
Modified Files:
src/doors/syncretro/syncretro_io.c
Log Message:
syncretro: say "n/a" when the client cannot patch, not "0%"

The stats bar had three situations and two labels. Patching a frame needs the client to persist its sixel colour registers between images, which is a SyncTERM property, so on any other terminal the dirty-rect share is structurally zero -- and it was reported as "dr 0%", which is also what a SyncTERM client shows when a game happens to move every pixel.

The comment defending "0%" argued that it tells the reader the feature is on. It does, where patching is possible. Where it is not, it reads as a
measurement of something that was never attempted.

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