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Simplified version check

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This commit is contained in:
Andrew Murray 2022-05-19 20:59:16 +10:00
parent b3d29e946a
commit 98329354e0
1 changed files with 10 additions and 11 deletions
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21
src/PIL/GifImagePlugin.py
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@ -912,17 +912,16 @@ def _get_global_header(im, info):
# https://www.matthewflickinger.com/lab/whatsinagif/bits_and_bytes.asp
version = b"87a"
for extensionKey in ["transparency", "duration", "loop", "comment"]:
if info and extensionKey in info:
if (extensionKey == "duration" and info[extensionKey] == 0) or (
extensionKey == "comment" and len(info[extensionKey]) == 0
):
continue
version = b"89a"
break
else:
if im.info.get("version") == b"89a":
version = b"89a"
if im.info.get("version") == b"89a" or (
info
and (
"transparency" in info
or "loop" in info
or info.get("duration")
or info.get("comment")
)
):
version = b"89a"
background = _get_background(im, info.get("background"))