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Fixed subtle shared mutability bug in tracebd.py

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In the hack where we wait for multiple updates to fill out a full
braille/dots line we store the current pixels in a temporary array.
Unfortunately, in some cases, this is the array we modify with
updates...

A copy fixes this.
This commit is contained in:
Christopher Haster
2023-10-27 13:51:04 -05:00
parent 46b78de500
commit 3e46139a45
1 changed files with 1 additions and 1 deletions
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scripts/tracebd.py
+1 -1
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@@ -534,7 +534,7 @@ class Bd:
needed_height = 4 if braille else 2 needed_height = 4 if braille else 2
self.history = getattr(self, 'history', []) self.history = getattr(self, 'history', [])
self.history.append(grid) self.history.append(grid.copy())
if len(self.history)*self.height < needed_height: if len(self.history)*self.height < needed_height:
# skip for now # skip for now