Add support for `-abc`, `-a=arg` and `--flag=arg` notation

[DannyBen]

Support for these flag notations can probably be achieved easily if we add a normalization function before calling parse_requirements:

https://github.com/DannyBen/bashly/blob/7592d5e07ecf1cf4f910352fbab19804994d8629/lib/bashly/views/command/run.erb#L5

Changing it to something like this:

normalize_input   # this function will set a new array named $input
parse_requirements "${input[@]}"

Possible implementation

#!/usr/bin/env bash
normalize_input() {
  local arg flags

  while [[ $# -gt 0 ]]; do
    arg="$1"
    if [[ $arg =~ ^(--[^=]+)=(.+)$ ]]; then
      input+=("${BASH_REMATCH[1]}")
      input+=("${BASH_REMATCH[2]}")
    elif [[ $arg =~ ^(-[^=])=(.+)$ ]]; then
      input+=("${BASH_REMATCH[1]}")
      input+=("${BASH_REMATCH[2]}")
    elif [[ $arg =~ ^-([^-].+)$ ]]; then
      flags="${BASH_REMATCH[1]}"
      for (( i=0 ; i < ${#flags} ; i++ )); do
        input+=("-${flags:i:1}")
      done
    else
      input+=("$arg")
    fi    
    
    shift
  done
}

declare -a input
normalize_input "$@"
for value in "${input[@]}"; do
  echo ": $value"
done

Output

$ ./test.sh -a -b arg -cde -f=arg --flag=arg -a=b=c --flag=anything=goes
: -a
: -b
: arg
: -c
: -d
: -e
: -f
: arg
: --flag
: arg
: -a
: b=c
: --flag
: anything=goes