ngx_postgres generates bogus "duplicate variable" error

[cwells]

A config like the following config fails:

location /x {  postgres_escape $data $arg_data; }
location /y {  postgres_escape $data $arg_data; }

result is error such as:

[emerg]: the duplicate "data" variable in /etc/nginx/nginx.conf:31
configuration file /etc/nginx/nginx.conf test failed

Replacing "postgres_escape" with "set" does not result in similar error.

[cwells]

I should also point out that the following seemingly equivalent config works:

location /x {
    set $data $arg_data;
    set_quote_sql_str for=pg $data;
}

location /y {
    set $data $arg_data;
    set_quote_sql_str for=pg $data;
}

[PiotrSikora]

Again, this is done by design to avoid "stupid accidents" that happen when same variable is re-used in number of locations.

[PiotrSikora]

Hey Cliff, I've just committed major rewrite of postgres_escape directive which adds ability to re-use variable names... It solves your original issue, so I'm closing this.

[cwells]

great, thanks!