DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG· RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT <http://issues.apache.org/bugzilla/show_bug.cgi?id=40831>. ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND· INSERTED IN THE BUG DATABASE.
http://issues.apache.org/bugzilla/show_bug.cgi?id=40831 Summary: RewriteMap empty value behaves differently from documentation Product: Apache httpd-2 Version: 2.3-HEAD Platform: Other URL: http://httpd.apache.org/docs/2.3/mod/mod_rewrite.html#re writemap OS/Version: other Status: NEW Severity: minor Priority: P2 Component: Documentation AssignedTo: [email protected] ReportedBy: [EMAIL PROTECTED] The RewriteMap documentation says: ${ MapName : LookupKey } ${ MapName : LookupKey | DefaultValue } When such a construct occurs, the map MapName is consulted and the key LookupKey is looked-up. If the key is found, the map-function construct is substituted by SubstValue. If the key is not found then it is substituted by DefaultValue or by the empty string if no DefaultValue was specified. If the lookup succeeds, but the map contains no value for the given key (a line with only a key, or a key followed by whitespace), this is treated as though the key were absent entirely. The documentation suggests that this "no value" situation should result in an empty string expansion, not DefaultValue, when in fact, the DefaultValue is used instead. It would actually be kind of nice if it expanded to an empty string (thus making the situation where a key is present but without a value significantly different from a situation where a key is absent), but I'm fine with a documentation fix/clarification, perhaps something like this: When such a construct occurs, the map MapName is consulted and the key LookupKey is looked-up. If the key is found and has a non-empty value, the map-function construct is substituted by SubstValue. If the key is not found or is found but has no value, then it is substituted by DefaultValue or by the empty string if no DefaultValue was specified. And perhaps even with this note: It is not possible to distinguish between a key present in the map but without a value from a key missing from the map entirely. -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
