🐞 fix: Do not mangle output if contains tabs

Fixes #19

src/column_ansi.pl

@@ -34,7 +34,7 @@ sub trim_ansi {
 
 # Default values for INPUT_SEPARATOR and OUTPUT_SEPARATOR
 if ($INPUT_SEPARATOR eq ""){
-	$INPUT_SEPARATOR = " "
+	$INPUT_SEPARATOR = qr/[\s\t]+/;
 }
 if ($OUTPUT_SEPARATOR eq ""){
 	$OUTPUT_SEPARATOR = "  "

tests/functional/spaces.test.sh

@@ -0,0 +1,20 @@
+#shellcheck shell=sh
+
+%const LIBRARY_PATH: src/column_ansi.sh
+Include "${LIBRARY_PATH}"
+
+input_data () {
+    printf "this  \twill  \t  be\taligned"
+}
+
+# @see https://github.com/LukeSavefrogs/column_ansi/issues/19
+Describe "Mixed tabs and spaces:"
+	Example "should work when words have mixed whitespace"
+		Set 'errexit:on'
+
+		Data input_data
+		When call column_ansi -t -o "|"
+		The status should be success
+		The output should eq "this|will|be|aligned"
+	End
+End