snippet     l
abbr        let v = ...;
options     head
  let ${1:var} = ${2:val};

snippet     lm
abbr        let mut v = ...;
options     head
  let mut ${1:var} = ${2:val};

snippet     ife
abbr        if let Err(e) = do() { ... }
options     head
  if let Err(${1:e}) = ${2:do}(${3}) {
    ${0}
  }

snippet     fori
abbr        for v in ...
options     head
  for ${1:line} in ${2:s.lines()} {
    ${0}
  }

snippet     tests
abbr        #[cfg(test)] mod tests { ... }
options     head
  #[cfg(test)]
  mod tests {
    use super::*;

    ${0}
  }

snippet     test
abbr        #[test] fn test() { ... }
options     head
  #[test]
  fn ${1:test_do}() {
    ${0}
  }