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-rw-r--r--bin/filter.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/bin/filter.cpp b/bin/filter.cpp
index 4e805a48..1da9440b 100644
--- a/bin/filter.cpp
+++ b/bin/filter.cpp
@@ -5,7 +5,7 @@ int main (int argc, char* argv[]) {
for (;;) {
c = getchar();
if (c == EOF) break;
- if (c == '#')
+ if (c == '#' || c == '?')
putchar('_');
else if (c == '$') {
putchar(':'); putchar(':');