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Bug 642191 - Html parser ignores whitespace after empty tags.
Html parser ignores whitespace after empty tags.
Status: RESOLVED DUPLICATE of bug 681822
Product: libxml2
Classification: Platform
Component: htmlparser
Other All
: Normal normal
: ---
Assigned To: Daniel Veillard
libxml QA maintainers
Depends on:
Reported: 2011-02-12 20:07 UTC by Erik Andersén
Modified: 2017-06-17 10:49 UTC
See Also:
GNOME target: ---
GNOME version: ---

Description Erik Andersén 2011-02-12 20:07:00 UTC
If an start tag of an empty element (<input>, <img>, etc) is followed by just whitespace that whitespace is ignored.

 erik@debian:~$ echo '<p><input> <input></p>' | xmllint -html -
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "">

In for all other elements whitespace is preserved.
erik@colinux:~$ echo "<p> <em></em> <input>  </p>" | xmllint -html -
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "">
<html><body><p> <em></em> <input></p></body></html>

Why do an exception for empty tags?
The html will render differently with and without the space between the <input> tags.

erik@debian:~$ xmllint -version
xmllint: using libxml version 20708                                                                        
   compiled with: Threads Tree Output Push Reader Patterns Writer SAXv1 FTP HTTP DTDValid HTML Legacy C14N Catalog XPath XPointer XInclude Iconv ISO8859X Unicode Regexps Automata Expr Schemas Schematron Modules Debug Zlib
Comment 1 Nick Wellnhofer 2017-06-17 10:49:56 UTC

*** This bug has been marked as a duplicate of bug 681822 ***