ref: ff4daa7e93f4ea09506276ecdb69fa1cca19a7a7
dir: /sys/src/cmd/hg/templates/spartan/error.tmpl/
{header} <title>Mercurial Error</title> </head> <body> <h2>Mercurial Error</h2> <p> An error occurred while processing your request: </p> <p> {error|escape} </p> {footer}