How to split body message on \n

[carross-tlhuillier]

I use docker compose logs -f | lnav this give me logs, but there is no line return for php logs instead there is '\n'.
Example :

[Thu May  7 19:12:21.717338 2026] [php:notice] [pid 26:tid 26] [client 172.19.0.1:52822] PHP Fatal error:  Uncaught Doctrine\\ORM\\Query\\QueryException: SELECT DISTINCT fv.id as id, log redacted                      )\n                      AND fv.Feature = :Feature ORDER BY fvt.name in /var/www/html/lib/vendor/doctrine/orm/src/Query/QueryException.php:23\nStack trace:\n#0 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(516): Doctrine\\ORM\\Query\\QueryException::dqlError('SELECT DISTINCT...')\n#1 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1110): Doctrine\\ORM\\Query\\Parser->semanticalError('line 0, col 230...')\n#2 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1829): Doctrine\\ORM\\Query\\Parser->JoinAssociationPathExpression()\n#3 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1762): Doctrine\\ORM\\Query\\Parser->JoinAssociationDeclaration()\n#4 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1655): Doctrine\\ORM\\Query\\Parser->Join()\n#5 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1373): Doctrine\\ORM\\Query\\Parser->IdentificationVariableDeclaration()\n#6 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(902): Doctrine\\ORM\\Query\\Parser->FromClause()\n#7 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(871): Doctrine\\ORM\\Query\\Parser->SelectStatement()\n#8 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(263): Doctrine\\ORM\\Query\\Parser->QueryLanguage()\n#9 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(363): Doctrine\\ORM\\Query\\Parser->getAST()\n#10 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(279): Doctrine\\ORM\\Query\\Parser->parse()\n#11 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(865): Doctrine\\ORM\\Query->parse()\n#12 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(291): Doctrine\\ORM\\Query->getSqlExecutor()\n#13 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(1218): Doctrine\\ORM\\Query->_doExecute()\n#14 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(1172): Doctrine\\ORM\\AbstractQuery->executeIgnoreQueryCache(NULL, 3)\n#15 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(943): Doctrine\\ORM\\AbstractQuery->execute(NULL, 3)\n#16 log redacted {main}\n\nNext Doctrine\\ORM\\Query\\QueryException: [Semantical Error] line 0, col 230 near 's\n          ': Error: Class redacted has no association named redacted in /var/www/html/lib/vendor/doctrine/orm/src/Query/QueryException.php:45\nStack trace:\n#0 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(516): Doctrine\\ORM\\Query\\QueryException::semanticalError('line 0, col 230...', Object(Doctrine\\ORM\\Query\\QueryException))\n#1 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1110): Doctrine\\ORM\\Query\\Parser->semanticalError('line 0, col 230...')\n#2 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1829): Doctrine\\ORM\\Query\\Parser->JoinAssociationPathExpression()\n#3 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1762): Doctrine\\ORM\\Query\\Parser->JoinAssociationDeclaration()\n#4 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1655): Doctrine\\ORM\\Query\\Parser->Join()\n#5 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1373): Doctrine\\ORM\\Query\\Parser->IdentificationVariableDeclaration()\n#6 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(902): Doctrine\\ORM\\Query\\Parser->FromClause()\n#7 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(871): Doctrine\\ORM\\Query\\Parser->SelectStatement()\n#8 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(263): Doctrine\\ORM\\Query\\Parser->QueryLanguage()\n#9 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(363): Doctrine\\ORM\\Query\\Parser->getAST()\n#10 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(279): Doctrine\\ORM\\Query\\Parser->parse()\n#11 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(865): Doctrine\\ORM\\Query->parse()\n#12 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(291): Doctrine\\ORM\\Query->getSqlExecutor()\n#13 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(1218): Doctrine\\ORM\\Query->_doExecute()\n#14 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(1172): Doctrine\\ORM\\AbstractQuery->executeIgnoreQueryCache(NULL, 3)\n#15 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(943): Doctrine\\ORM\\AbstractQuery->execute(NULL, 3)\n#16 log redacted {main}\n  thrown in /var/www/html/lib/vendor/doctrine/orm/src/Query/QueryException.php on line 45, referer: https://www.test.local/redacted.html
[Thu May  7 19:12:21.717420 2026] [php:notice] [pid 26:tid 26] [client 172.19.0.1:52822] PHP Warning Debug: Server Request URI: GET - www.test.local/redacted.htmlafter, referer: https://www.test.local/redacted.html

I use this custom format file (from default error_log.json)

{
    "$schema": "https://lnav.org/schemas/format-v1.schema.json",
    "docker_error_log": {
        "title": "php Error Log",
        "description": "The default web error log format for servers like Apache.",
        "regex": {
            "php": {
                "pattern": "^\\[(?<timestamp>[^\\]]+)\\] \\[(?<module>php):(?<level>\\w+)\\](?: \\[pid (?<pid>\\d+)(:tid (?<tid>\\d+))?\\])?(?: \\[client (?<c_ip>[\\w\\.:\\-]+):(?<c_port>\\d+)\\])? (?<body>.*)"
            },
            "apache": {
                "pattern": "^\\[(?<timestamp>[^\\]]+)\\] \\[(?:(?<module>[^:]+):)?(?<level>\\w+)\\](?: \\[pid (?<pid>\\d+)(:tid (?<tid>\\d+))?\\])?(?: \\[client (?<c_ip>[\\w\\.:\\-]+):(?<c_port>\\d+)\\])? (?<body>.*)"
            }
        },
        "level-field": "level",
        "value": {
            "module": {
                "kind": "string",
                "identifier": true
            },
            "pid": {
                "kind": "integer",
                "identifier": true
            },
            "tid": {
                "kind": "integer",
                "identifier": true,
                "description": "The thread id"
            },
            "c_ip": {
                "kind": "string",
                "collate": "ipaddress",
                "identifier": true,
                "description": "The client IP address"
            },
            "c_port": {
                "kind": "integer",
                "identifier": true
            },
            "body": {
                "kind": "string",
                "identifier": false
            }
        },
        "rewriter": {
            "decode_newlines": {
                "pattern": "\\\\n",
                "replacement": "\n"
              }
        },
        "sample": [
            {
                "line": "[Tue Apr 04 06:18:29.712806 2017] [mpm_prefork:notice] [pid 17725] AH00163: Apache/2.4.23 (Unix) configured -- resuming normal operations",
                "level": "notice"
            },
            {
                "line": "[Tue Apr 04 06:28:08.605341 2017] [core:error] [pid 17962] [client 127.0.0.1:60444] AH00135: Invalid method in request FOO /",
                "level": "error"
            },
            {
                "line": "[Thu Jan 17 02:42:49 2013] [notice] Digest: generating secret for digest authentication ...",
                "level": "notice"
            },
            {
                "line": "[Thu May 12 08:28:57.652118 2011] [core:error] [pid 8777:tid 4326490112] [client ::1:58619] File does not exist: /usr/local/apache2/htdocs/favicon.ico",
                "level": "error"
            },
            {
                "line": "[Thu Jan 02 22:23:07.368853 2020] [http:info] [pid 4784:tid 139701043291904] [client 66.220.149.10:45948] AH01593: chunked Transfer-Encoding forbidden: /",
                "level": "info"
            },
            {
                "line": "[Thu May  7 19:12:21.717338 2026] [php:notice] [pid 26:tid 26] [client 172.19.0.1:52822] PHP Fatal error:  Uncaught Doctrine\\ORM\\Query\\QueryException: SELECT DISTINCT fv.id as id, log redacted                      )\n                      AND fv.Feature = :Feature ORDER BY fvt.name in /var/www/html/lib/vendor/doctrine/orm/src/Query/QueryException.php:23\nStack trace:\n#0 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(516): Doctrine\\ORM\\Query\\QueryException::dqlError('SELECT DISTINCT...')\n#1 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1110): Doctrine\\ORM\\Query\\Parser->semanticalError('line 0, col 230...')\n#2 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1829): Doctrine\\ORM\\Query\\Parser->JoinAssociationPathExpression()\n#3 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1762): Doctrine\\ORM\\Query\\Parser->JoinAssociationDeclaration()\n#4 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1655): Doctrine\\ORM\\Query\\Parser->Join()\n#5 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1373): Doctrine\\ORM\\Query\\Parser->IdentificationVariableDeclaration()\n#6 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(902): Doctrine\\ORM\\Query\\Parser->FromClause()\n#7 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(871): Doctrine\\ORM\\Query\\Parser->SelectStatement()\n#8 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(263): Doctrine\\ORM\\Query\\Parser->QueryLanguage()\n#9 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(363): Doctrine\\ORM\\Query\\Parser->getAST()\n#10 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(279): Doctrine\\ORM\\Query\\Parser->parse()\n#11 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(865): Doctrine\\ORM\\Query->parse()\n#12 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(291): Doctrine\\ORM\\Query->getSqlExecutor()\n#13 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(1218): Doctrine\\ORM\\Query->_doExecute()\n#14 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(1172): Doctrine\\ORM\\AbstractQuery->executeIgnoreQueryCache(NULL, 3)\n#15 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(943): Doctrine\\ORM\\AbstractQuery->execute(NULL, 3)\n#16 log redacted {main}\n\nNext Doctrine\\ORM\\Query\\QueryException: [Semantical Error] line 0, col 230 near 's\n          ': Error: Class redacted has no association named redacted in /var/www/html/lib/vendor/doctrine/orm/src/Query/QueryException.php:45\nStack trace:\n#0 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(516): Doctrine\\ORM\\Query\\QueryException::semanticalError('line 0, col 230...', Object(Doctrine\\ORM\\Query\\QueryException))\n#1 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1110): Doctrine\\ORM\\Query\\Parser->semanticalError('line 0, col 230...')\n#2 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1829): Doctrine\\ORM\\Query\\Parser->JoinAssociationPathExpression()\n#3 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1762): Doctrine\\ORM\\Query\\Parser->JoinAssociationDeclaration()\n#4 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1655): Doctrine\\ORM\\Query\\Parser->Join()\n#5 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(1373): Doctrine\\ORM\\Query\\Parser->IdentificationVariableDeclaration()\n#6 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(902): Doctrine\\ORM\\Query\\Parser->FromClause()\n#7 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(871): Doctrine\\ORM\\Query\\Parser->SelectStatement()\n#8 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(263): Doctrine\\ORM\\Query\\Parser->QueryLanguage()\n#9 /var/www/html/lib/vendor/doctrine/orm/src/Query/Parser.php(363): Doctrine\\ORM\\Query\\Parser->getAST()\n#10 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(279): Doctrine\\ORM\\Query\\Parser->parse()\n#11 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(865): Doctrine\\ORM\\Query->parse()\n#12 /var/www/html/lib/vendor/doctrine/orm/src/Query.php(291): Doctrine\\ORM\\Query->getSqlExecutor()\n#13 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(1218): Doctrine\\ORM\\Query->_doExecute()\n#14 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(1172): Doctrine\\ORM\\AbstractQuery->executeIgnoreQueryCache(NULL, 3)\n#15 /var/www/html/lib/vendor/doctrine/orm/src/AbstractQuery.php(943): Doctrine\\ORM\\AbstractQuery->execute(NULL, 3)\n#16 log redacted {main}\n  thrown in /var/www/html/lib/vendor/doctrine/orm/src/Query/QueryException.php on line 45, referer: https://www.test.local/redacted.html",
                "level": "notice"
            }
        ]
    }
}

How to split lines on \n  ? I haven't find how to do that.

[tstack]

To clarify, the output coming directly out of docker compose logs has \n?

Unfortunately, there's not currently a way to have lnav reformat it in the main view.