approvals.bash: Ignore trailing CR & whitespace

Signed-off-by: Filip Gołaś <[email protected]>

test/approvals.bash

@@ -32,7 +32,8 @@ approve() {
     return
   fi
 
-  if [[ "$(printf "%b" "$actual")" = "$(printf "%b" "$expected")" ]]; then
+  $diff_cmd <(printf "%b" "$expected\n") <(printf "%b" "$actual\n")
+  if [[ $? == 0 ]]; then
     pass "$cmd"
   else
     printf -- "$changed_diff_string\n" "$cmd"
@@ -166,7 +167,7 @@ changed_diff_string="────┤ $(blue changed): $(bold %s) ├────
 approval_string="[A]pprove? "
 
 if diff --help | grep -- --color >/dev/null 2>&1; then
-  diff_cmd="diff --unified --color=always"
+  diff_cmd="diff --unified --strip-trailing-cr -Z --color=always"
 else
-  diff_cmd="diff --unified"
+  diff_cmd="diff --unified --strip-trailing-cr -Z"
 fi