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tweak a comment
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@@ -163,8 +163,8 @@ is_number (const char *str)
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use the given user's login group.
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If SPEC_ARG contains a `:', then use that as the separator, ignoring
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any `.'s. If there is no `:', but there is a `.', then first look
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up SPEC_ARG as a login name. If that look-up fails, then try again
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interpreting the `.' as a separator.
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up the entire SPEC_ARG as a login name. If that look-up fails, then
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try again interpreting the `.' as a separator.
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USERNAME and GROUPNAME will be in newly malloc'd memory.
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Either one might be NULL instead, indicating that it was not
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