- Moves dumping single-quoting logic into Yaml\Escaper
- Ensures that PHP values which would be interpreted as booleans in
older versions of the YAML spec are escaped with single quotes when
dumped by the Dumper.
Commits
-------
b631073 [Yaml] Fixed double quotes escaping in Dumper.
Discussion
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[Yaml] Fixed double quotes escaping in Dumper
Issue #4308 is caused by Dumper::escapeWithDoubleQuotes() which uses [str_replace()](http://php.net/str_replace).
From the php docs:
> Because str_replace() replaces left to right, it might replace a previously inserted value when doing multiple replacements.
We should be very careful in deciding about the order of elements in $escapees array. I'd really appreciate if someone reviewed my fix. Tests say I didn't break anything but I'm not sure what percentage of Yaml specification is covered by tests.
Bug fix: yes
Feature addition: no
Backwards compatibility break: not that I know
Symfony2 tests pass: [](http://travis-ci.org/jakzal/symfony)
Fixes the following tickets: #4308
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by travisbot at 2012-05-18T08:53:51Z
This pull request [passes](http://travis-ci.org/symfony/symfony/builds/1364279) (merged 5192722c into a04acc89).
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by travisbot at 2012-05-18T23:19:49Z
This pull request [fails](http://travis-ci.org/symfony/symfony/builds/1371539) (merged ecaa1aab into fc3c609b).
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by dinamic at 2012-05-19T07:35:21Z
Something is really wrong with this method. You can see clearly that multiple characters would fail proper escaping.
Here's an example:
```
$value = '\\\\"some value\n \"some quoted string\" and \'some single quotes one\'"';
var_dump(Escaper::escapeWithDoubleQuotes($value));
string(72) ""\\\"some value\n \\some quoted string\\ and 'some single quotes one'\"""
```
To begin with the backslash - in the initial value you have 2 (escaped ones), that after escaping should result in 4, not in 1 (escaped). I guess this behavior has to be verified with the importer, but imho it does not seem right.
Does anyone know why this escaping wasn't done using a regular expression in first place?
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by clemens-tolboom at 2012-05-19T10:18:58Z
Searching for https://duckduckgo.com/?q=what+is+\xc2\x85 the table on http://stackoverflow.com/questions/6609895/efficiently-replace-bad-characters is interesting enough to decide we need way more documentation on this file.
\xc2\x85 seems to be triple dot (ellipses)
\xe2\x80\xa9 seems to be paragraph separator see http://drupal.org/node/914360#comment-3468550
Conflicts:
src/Symfony/Component/Yaml/Escaper.php
Added support for the full range of escaped values in double quoted
strings in chapter 5 of the YAML 1.1 and 1.2 specs. The escaping
and unescaping strategies were factored out into separate classes to
keep the logic isolated.
Added examples from the spec to the unit tests for all escaped values.
