Test for git version detection

test_git_version-1_7_2.zsh

#!/usr/bin/env zsh

#compare the provided version of git to the version installed and on path
#prints 1 if input version <= installed version
#prints -1 otherwise

function git_compare_version() {
  local INPUT_GIT_VERSION=$1;
  local INSTALLED_GIT_VERSION
  INPUT_GIT_VERSION=(${(s/./)INPUT_GIT_VERSION});
  INSTALLED_GIT_VERSION=($(command git --version 2>/dev/null));
  INSTALLED_GIT_VERSION=(${(s/./)INSTALLED_GIT_VERSION[3]});

  for i in {1..3}; do
    if [[ $INSTALLED_GIT_VERSION[$i] -gt $INPUT_GIT_VERSION[$i] ]]; then
      echo 1
      return 0
    fi
    if [[ $INSTALLED_GIT_VERSION[$i] -lt $INPUT_GIT_VERSION[$i] ]]; then
      echo -1
      return 0
    fi
  done
  echo 0
}

POST_1_7_2_GIT=$(git_compare_version "1.7.2")
for cmd in $(which -a git);do command $cmd --version 2>/dev/null;done
echo $POST_1_7_2_GIT
if [[ $POST_1_7_2_GIT -gt 0 ]]; then
  echo cando
else
  echo nocando
fi

#clean up the namespace slightly by removing the checker function
unset -f git_compare_version