Fix command matching

[sei40kr]

Reproduce steps:

alias yst='yarn start'
yarn start:ja

Expected behavior:

(nothing output)

Actual behavior:

💡 yst:ja

[owm111]

Slightly different occurrence:

alias g=git
alias gs="git status"
git status

Expected behavior:

💡 gs

Actual behavior:

💡 gstatus

[ANGkeith]

Slightly different occurrence:

alias g=git
alias gs="git status"
git status

Expected behavior:

💡 gs

Actual behavior:

💡 gstatus

unable to replicate when using v0.1.0 of def-matcher

[ANGkeith]

Reproduce steps:

cat <<EOF | def-matcher "ls -G -lh -a"
ls='ls -G'
ll='ls -lh'
EOF

Expected output:

ll -a

Actual output:

ll-lh -a