Slightly extended cygstart command clone for cygwin (and expected for msys2).

xcygstart

#!/bin/bash
usage="$0 [Options] [NumberOfSkippingPathConvert] Command [Args]
Description:
  call spacified command with spacified args which is replaced path-delimiter
  character / to \.
Options:
  -c  with cmd.exe (Command is executed with 'cmd.exe /k')
  -x  (not implemented yet)
  -s  synchronize execution (wait a termination of Command)
  -n  dry run mode
  -v  verbose mode
  -h  print this usage 
Arguments:
  Command
    A name of command to be executed. This name is searched on search-path by
    envvar PATH.
  Args
    Arguments for the Command. In default, the arguments are tryed to be
    converted to Windows-style (¥¥-delimited and has a drive name) pathes.
  NumberOfSkippingPathConvert
    format as exgexp: [0-9]+
    If this argument N is specified, then the path convertion for the Args
    to Windows-style is switched off only on first N Args.
"

dryrun=false
verbose=false
withcmd=false
withxterm=false
synchronize=false
while true
do
  case "$1" in
  -n) dryrun=true;;
  -v) verbose=true;;
  -c) withcmd=true;;
  -x) withxterm=true;;
  -s) synchronize=true;;
  -h) echo "$usage"; exit 0;; 
  -*) echo "$0: $1: unknown option.¥n$usage"; exit 1;; 
  *) break;;
  esac
  shift
done

case "$1" in [0-9]|[0-9][0-9]) skip=$1; shift;; *) skip=0;; esac
cmd="$1"
shift

i=0
for arg in "$@"
do
  if [ $i -lt $skip ]; then
    args[$((i++))]="$arg"
  else
    args[$((i++))]=`cygpath -w "$arg"`
  fi
done

call="cygstart"
cmdsh=""
cmdpath=`which "$cmd"`
trailer=""
$synchronize && call=""
$withcmd && {
  cmdsh="`which cmd` /k"
  cmdpath=`cygpath -w "$cmd"`
  #trailer="& pause"
  trailer=""
}
$withxterm && {
  cmdsh="`which cmd` /k"
  cmdpath=`cygpath -w "$cmd"`
  #trailer="& pause"
  trailer=""
}

$dryrun || $verbose && echo $call $cmdsh "$cmdpath" "${args[@]}" $trailer
$dryrun || $call $cmdsh "$cmdpath" "${args[@]}" $trailer