Legacy $template statement

Historic syntax supporting only string templates. Kept for compatibility with older configurations. .. summary-end

Legacy format provides limited functionality but is still frequently encountered. Only string templates are supported with the syntax:

$template myname,<string-template>

Here myname is the template name (similar to name="myname" in the modern format) and <string-template> is the same as the string parameter in modern templates.

Example modern template:

template(name="tpl3" type="string"
         string="%TIMESTAMP:::date-rfc3339% %HOSTNAME% %syslogtag%%msg:::sp-if-no-1st-sp%%msg:::drop-last-lf%\n"
        )

Equivalent legacy statement:

$template tpl3,"%TIMESTAMP:::date-rfc3339% %HOSTNAME% %syslogtag%%msg:::sp-if-no-1st-sp%%msg:::drop-last-lf%\n"

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