Fix TrailingZero message with multiple trailing zeros

We would not match as many trailing zeros as were present in some cases,
printing a message that was incorrect, e.g.

    `.600` should be written without a trailing zero as `.60`

instead of:

    `.600` should be written without a trailing zero as `.6`

Fixes sds#792

CHANGELOG.md

@@ -6,6 +6,8 @@
 * Fix `PropertySortOrder` `separate_groups` option to work for preset sort
   orders
 * Add `background-clip` and `clip` to `smacss` preset sort order
+* Fix `TrailingZero` to report correct lint messages for values with multiple
+  trailing zeros
 
 ## 0.48.0
 

lib/scss_lint/linter/trailing_zero.rb

@@ -25,7 +25,7 @@ def visit_script_number(node)
     FRACTIONAL_DIGIT_REGEX = /^-?(\d*\.\d+)/
 
     def check_for_trailing_zeros(node, original_number)
-      return unless match = /^(\d*\.\d*)0+$/.match(original_number)
+      return unless match = /^(\d*\.(?:[0-9]*[1-9]|[1-9])*)0+$/.match(original_number)
 
       fixed_number = match[1]
 

spec/scss_lint/linter/trailing_zero_spec.rb

@@ -47,6 +47,16 @@
     it { should_not report_lint }
   end
 
+  context 'when a unitless fractional value with multiple trailing zero exists' do
+    let(:scss) { <<-SCSS }
+      p {
+        line-height: .600;
+      }
+    SCSS
+
+    it { should report_lint }
+  end
+
   context 'when a negative unitless fractional value with no trailing zero exists' do
     let(:scss) { <<-SCSS }
       p {