% causes escaping of single quotes in app.yml in some circumstances

Did you try the following?

  test1: "test %te'st%"
  test2: "test %te'st"

I get the same results with that.

I think this may be related to sfToolkit::replaceConstants being called on every value of app.yml after the yaml is parsed.

I have not tested it extensively, but I believe the solution to this may be to change this line in sfToolkit::replaceConstants:

return is_string($value) ? preg_replace('/%(.+?)%/e', 'sfConfig::has(strtolower("\\1")) ? sfConfig::get(strtolower("\\1")) : "%\\1%"', $value) : $value;

to:

return is_string($value) ? preg_replace('/%(.+?)%/e', 'sfConfig::has(strtolower("\\1")) ? sfConfig::get(strtolower("\\1")) : \'%\\1%\'', $value) : $value;

That is, changing "%\\1%"' to \'%\\1%\

preg_replace with the \e option escapes some characters, including ', in the backreference replacements. When used in the expression the way it is with double quotes, that is causing the double escaping. Using single quotes in the expression seems to fix it.

Is there anything I can do to help this fix be included in 1.1? Would providing a patch file of the solution above help? Are there any problems with my solution?

Austin, can you submit a patch please?