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-rwxr-xr-xcodegen/h2def.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/codegen/h2def.py b/codegen/h2def.py
index 7669fd4..3ed3642 100755
--- a/codegen/h2def.py
+++ b/codegen/h2def.py
@@ -331,7 +331,7 @@ class DefsWriter:
for ent in entries:
# shorten prefix til we get a match ...
# and handle GDK_FONT_FONT, GDK_FONT_FONTSET case
- while (prefix[-1] != '_' or ent[:len(prefix)] != prefix
+ while ((len(prefix) and prefix[-1] != '_') or ent[:len(prefix)] != prefix
or len(prefix) >= len(ent)):
prefix = prefix[:-1]
prefix_len = len(prefix)