Remove last use of LS_PROGRAM

Globs are not determined by an `eval` of `ls` anymore. The only other
use of `ls` can be replaced with a simple `printf`.

test/003_unit_ls_program.bats

@@ -1,66 +0,0 @@
-load common
-load_fixtures
-
-@test "Default /bin/ls" {
-  echo "
-    By default, the value of LS_PROGRAM should be /bin/ls
-  "
-
-  # shellcheck source=/dev/null
-  YADM_TEST=1 source "$T_YADM"
-  status=0
-  output=$( require_ls; echo "$LS_PROGRAM" ) || {
-    status=$?
-    true
-  }
-
-  echo "output=$output"
-
-  [ "$status" == 0 ]
-  [ "$output" = "/bin/ls" ]
-}
-
-@test "Fallback on 'ls'" {
-  echo "
-    When LS_PROGRAM doesn't exist, use 'ls'
-  "
-
-  # shellcheck source=/dev/null
-  YADM_TEST=1 source "$T_YADM"
-  status=0
-  LS_PROGRAM="/ls/missing"
-  output=$( require_ls; echo "$LS_PROGRAM" ) || {
-    status=$?
-    true
-  }
-
-  echo "output=$output"
-
-  [ "$status" == 0 ]
-  [ "$output" = "ls" ]
-}
-
-@test "Fail if ls isn't in PATH" {
-  echo "
-    When LS_PROGRAM doesn't exist, use 'ls'
-  "
-
-  # shellcheck source=/dev/null
-  YADM_TEST=1 source "$T_YADM"
-  status=0
-  LS_PROGRAM="/ls/missing"
-  savepath="$PATH"
-  # shellcheck disable=SC2123
-  PATH=
-  output=$( require_ls 2>&1; echo "$LS_PROGRAM" ) || {
-    status=$?
-    true
-  }
-  PATH="$savepath"
-
-  echo "output=$output"
-
-  [ "$status" != 0 ]
-  [[ "$output" =~ functionality\ requires\ .ls.\ to\ be\ installed ]]
-}
-

yadm

@@ -35,7 +35,6 @@ FULL_COMMAND=""
 
 GPG_PROGRAM="gpg"
 GIT_PROGRAM="git"
-LS_PROGRAM="/bin/ls"
 ENVTPL_PROGRAM="envtpl"
 LSB_RELEASE_PROGRAM="lsb_release"
 
@@ -437,7 +436,6 @@ function encrypt() {
 
   require_gpg
   require_encrypt
-  require_ls
 
   #; process relative to YADM_WORK
   YADM_WORK=$(unix_path "$("$GIT_PROGRAM" config core.worktree)")
@@ -473,7 +471,7 @@ function encrypt() {
 
   #; report which files will be encrypted
   echo "Encrypting the following files:"
-  "$LS_PROGRAM" -1 -d "${ENC_FILES[@]}"
+  printf '%s\n' "${ENC_FILES[@]}"
   echo
 
   #; encrypt all files which match the globs
@@ -685,8 +683,6 @@ function list() {
 
 function perms() {
 
-  require_ls
-
   #; TODO: prevent repeats in the files changed
 
   #; process relative to YADM_WORK
@@ -1041,13 +1037,6 @@ function require_gpg() {
 function require_repo() {
   [ -d "$YADM_REPO" ] || error_out "Git repo does not exist. did you forget to run 'init' or 'clone'?"
 }
-function require_ls() {
-  if [ ! -f "$LS_PROGRAM" ] ; then
-    command -v ls >/dev/null 2>&1 || \
-      error_out "This functionality requires 'ls' to be installed at '$LS_PROGRAM' or listed in your \$PATH"
-    LS_PROGRAM=ls
-  fi
-}
 function require_shell() {
   [ -x "$SHELL" ] || error_out "\$SHELL does not refer to an executable."
 }