File: tab-size-spacing-003.html

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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Text level 3 Test: tab-size and word-spacing</title>
<link rel="author" title="Jonathan Kew" href="mailto:jkew@mozilla.com">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#tab-size-property">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#letter-spacing-property">
<link rel="match" href="tab-size-spacing-003-ref.html">
<meta name="assert" content="For the tab-size property, a <number> represents the measure as a multiple of the space character’s advance width (U+0020) including its associated letter-spacing and word-spacing">
<style>
div {
  font-family: monospace; /* so we can compare tab with a count of preserved spaces */
  white-space: pre;
}
.test {
  word-spacing: 1ch; /* effectively double the size of SPACE, and hence of tabs */
  tab-size: 3;
}
.ref1 {
  word-spacing: 1ch;
}
.ref2 {
  white-space: pre;
}
</style>

<p>Test passes if the "1"s all line up vertically:
<div class=ref1>1 2 1 2 1 2 1</div>
<div class=test>1&#9;1&#9;1&#9;1</div>
<div class=ref2>1     1     1     1</div>