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-rw-r--r--toolsrc/src/package_spec.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/toolsrc/src/package_spec.cpp b/toolsrc/src/package_spec.cpp
index b9f6f54fe..86d4393bd 100644
--- a/toolsrc/src/package_spec.cpp
+++ b/toolsrc/src/package_spec.cpp
@@ -5,7 +5,7 @@ namespace vcpkg
{
static bool is_valid_package_spec_char(char c)
{
- return (c == '-') || (isalnum(c) && islower(c));
+ return (c == '-') || isdigit(c) || (isalpha(c) && islower(c));
}
expected<package_spec> package_spec::from_string(const std::string& spec_as_string, const triplet& default_target_triplet)