`index()` treats both numbers with and without units as the same value.

[oscarmarcelo]

Ruby Sass index() treats both numbers with and without units as the same value.
For example: 1 == 1px.

input.scss

test {
  content: inspect(index(true 1, 1px));
}

Actual results

ruby sass 3.7.2

test {
  content: 2; }

Expected result

dart sass 1.6.2

test {
  content: null; }

LibSass also has the same error. sass/libsass#2810

libsass 3.5.2

test {
  content: 2; }

[nex3]

Duplicate of sass/sass#1496.

This will not be fixed in Ruby Sass, because Ruby Sass is deprecated and will cease to be maintained at the end of March.