烟

烟是一个不精确匹配的命令行工具，递归地搜索当前目录下的文件，并跳过由gitignore规则排除的文件。

可以这样使用

$ fum pattrn
./Cargo.toml:6: pattern
./Cargo.toml:13: pattern
./README.md:9: pattern
./README.md:10: pattern
./README.md:11: pattern
./README.md:12: pattern
./README.md:13: pattern
./README.md:14: pattern
./README.md:15: pattern
./README.md:16: pattern
./README.md:17: pattern
./README.md:18: pattern
./src/main.rs:10: pattern
./src/main.rs:11: pattern
./src/main.rs:16: pattern
./src/main.rs:23: pattern
./src/main.rs:31: pattern
./src/main.rs:39: pattern