pub fn print_quick_help() {
let help_text = r#"Kelora - Scriptable log processor for the command line
Usage:
kelora [OPTIONS] [FILES]...
kelora [OPTIONS] < input.log
kelora # Run without arguments to enter interactive mode
kelora --help # Full CLI reference (all options)
Quick Examples:
kelora -f logfmt -l error simple_logfmt.log
kelora -f json,line mixed.log --filter 'e._format == "json"'
kelora -f auto-per-file -F json services/*/*.log
kelora web_access_large.log.gz --stats
kelora simple_json.jsonl --filter 'e.service == "database"' --exec 'e.duration_s = e.get_path("duration_ms", 0) / 1000' -k timestamp,message,duration_s
kelora simple_json.jsonl --since 2024-01-15T10:01:00Z --until now -l warn,error --stats
kelora audit.jsonl --exec 'track_count(e.action)' --metrics
kelora api.jsonl --discover
kelora app.jsonl --drain -k message
kelora -f json --merge-sorted app-*.jsonl
kelora payments_latency.jsonl --parallel --filter 'e.duration_ms > 500' -k order_id,duration_ms,status
tail -f app.log | kelora -j -l error,warn
Common Options:
-f, --input-format <FORMAT> Choose parser (auto, auto-per-file, json, line, raw, logfmt, syslog, cef, csv, tsv, csvnh, tsvnh, combined, cols:<spec>, regex:<pattern>, or cascade list e.g. json,line)
-j Shortcut for -f json
--filter <expr> Keep events where expression is true (can repeat; run in the order given)
-l, --levels <levels> Keep only these log levels (comma-separated)
-e, --exec <expr> Transform events or emit metrics (can repeat; run in the order given)
-k, --keys <fields> Pick or reorder output fields
-F, --output-format <FORMAT> Output format (default/json/logfmt/inspect/levelmap/keymap/tailmap/csv/tsv/csvnh/tsvnh)
-q, --quiet Suppress event output (-s/--stats and -m/--metrics imply this)
-n, --take <N> Limit output to first N events
-s, --stats Show only the statistics, with discovered fields
-m, --metrics Show only the tracked metrics
--discover Profile field names, types, and sample values (sequential only)
--drain Summarize log templates (requires -k/--keys, sequential only)
--merge-sorted Merge already-sorted files by timestamp; aborts on missing timestamps, parse failures, or disorder (sequential only)
Interactive Mode:
kelora Run without arguments to enter interactive mode
(readline-based REPL with history, glob expansion,
and proper quoting - especially helpful on Windows)
More Help:
kelora --help Full CLI reference (all 100+ options grouped by category)
kelora --help-rhai Rhai language guide + stage semantics
kelora --help-functions Complete built-in function catalogue (150+ functions)
kelora --help-examples Common patterns and example walkthroughs
kelora --help-formats Format reference with extracted fields
kelora --help-time Timestamp format reference
kelora --help-multiline Multiline event strategies
kelora --help-regex Regex format parsing guide
"#;
println!("{}", help_text);
}