Minor changes

tools/bits-info.sh

@@ -99,7 +99,7 @@ convert_max_unsigned_int_to_bit()
 
 warn_msg()
 {
-  if test "${NO_COLOR:-0}" != 0; then
+  if test -n "${NO_COLOR-}"; then
     printf 1>&2 '%s\n' "WARNING: ${1}"
   elif test "${CI:-false}" = 'false'; then
     printf 1>&2 '\033[0;33m\r%s\n\033[0m\r    \r' "WARNING: ${1}"
@@ -989,12 +989,17 @@ list_available_shells()
 
 pause_if_needed()
 {
-  # shellcheck disable=SC3028 # In POSIX sh, SHLVL is undefined
+  # shellcheck disable=SC3028 # Intended: In POSIX sh, SHLVL is undefined
   if test "${NO_PAUSE:-0}" = '0' && test "${CI:-false}" = 'false' && test "${TERM_PROGRAM:-unknown}" != 'vscode' && test "${SHLVL:-1}" = '1' && test -t 0 && test -t 1 && test -t 2; then
-    printf 1>&2 '\n\033[1;32m%s\033[0m' 'Press any key to exit... ' || :
-    # shellcheck disable=SC3045
-    IFS='' read 1> /dev/null 2>&1 -r -s -n 1 _ || IFS='' read 1>&2 -r _ || :
+    if test -n "${NO_COLOR-}"; then
+      printf 1>&2 '\n%s' 'Press any key to exit... ' || :
+    else
+      printf 1>&2 '\n\033[1;32m\r%s' 'Press any key to exit... ' || :
+    fi
+    # shellcheck disable=SC3045 # Intended: In POSIX sh, read -s / -n is undefined
+    IFS='' read 2> /dev/null 1>&2 -r -s -n 1 _ || IFS='' read 1>&2 -r _ || :
     printf 1>&2 '\n' || :
+    test -n "${NO_COLOR-}" || printf 1>&2 '\033[0m\r    \r' || :
   fi
   return "${1}"
 }