shellrvm

where __rvm_sed command defined

I am reading the source code for RVM(RVM), which uses the command __rvm_sed, but I cannot find a definition of __rvm_sed in the source code. Can someone help with that?

Solution

  • After peeking at the source code on Gitlab, it looks like __rvm_sed is defined in the file scripts/functions/support:

    line
 281  __rvm_setup_utils_functions

    line
 175  __rvm_setup_utils_functions()
 176  {
 177    \typeset gnu_tools_path gnu_prefix gnu_util
 178    \typeset -a gnu_utils gnu_missing
 179    gnu_utils=( awk cp date find sed tail tar xargs )
 180    gnu_missing=()
 181  
 182    if is_a_function __rvm_setup_utils_functions_${_system_name}
 183    then __rvm_setup_utils_functions_${_system_name} "$@" || return $?
 184    else __rvm_setup_utils_functions_Other "$@" || return $?
 185    fi
 186  }

    _system_name is (seemingly) defined in scripts/functions/detect/system, and can take one of the following values:

    So the script will try to invoke __rvm_setup_utils_functions_${_system_name} if that function exists, or fallback to __rvm_setup_utils_functions_Other "$@" ...

    line
 252  __rvm_setup_utils_functions_Other()
 253  {
 254    __rvm_stat() { \command \stat "$@" || return $?; }
 255    __rvm_setup_utils_functions_common
 256  }

    ... which in turn invokes __rvm_setup_utils_functions_common:

    line
 258  __rvm_setup_utils_functions_common()
 259  {
      (... snip ...)
 276    for gnu_util in "${gnu_utils[@]}"
 277    do eval "__rvm_$gnu_util() { \\$gnu_util \"\$@\" || return \$?; }"
 278    done
 279  }

    So when $gnu_util is sed, function __rvm_sed() is { \sed "$@" || return $?; }

    Hope that helps.