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Invisible characters inserted at top of every document

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    elvispresley2k Reply #1, 13 years, 6 months ago
    Hi Modxers,

    I have a modx 2.2.4 install, a string of invisible characters began appearing at the top of every document.

    • In the output, invisible characters appear, across all templates. Even a document with a blank ("0") template has invisible characters inserted before anything else.
    • And non-cached pages with the blank template--coming directly from db--have the invisible characters

    But strangely clearing the cache fixes the issue?

    Why would clearing the cache fix the problem of invisible characters appearing at the top of a non-cached, blank template resource?

    Any clues? Thanks!


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      BobRay Reply #2, 13 years, 6 months ago
      What characters are being inserted? Paste them here inside code tags.
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        BobRay Reply #3, 13 years, 6 months ago
        What characters are being inserted? Paste them here inside code tags.
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          Garry Nutting Reply #4, 13 years, 6 months ago
          I'd suspect, without any more info, something like UTF8 BOM characters in the template ... i.e. something that doesn't cause a problem when being retrieved from the database but that could cause a problem if written to a cache file.

          If you are copying and pasting your template code from a text editor, try saving as UTF8 (no BOM) first and then copying and pasting ... like I said, just a guess at the moment.
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            elvispresley2k Reply #5, 13 years, 6 months ago
            Quote from: BobRay at Mar 27, 2013, 10:30 PM
            What characters are being inserted? Paste them here inside code tags.

            Hey Bob,

            Here is the offending output…

            EDIT: The pasted text breaks the forum "code".
            EDIT2: The text won't paste into "Pastebin" either
            EDIT3: The offending text is attached as a .html file

            EDIT4: The sample .html won't attach either? Okay, I've put it on a AWS EC2 instance: http://ec2-50-19-151-149.compute-1.amazonaws.com/example-bad-characters.html
            Please note:

            • This is not where the actual page is hosted.
            • It appears webkit browsers will auto-strip the offending text, but Firefox will keep it intact. (So grab the source using Firefox.)


            And here's how it looks in bbEdit:

            [ed. note: elvispresley2k last edited this post 13 years, 6 months ago.]
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              sottwell Reply #6, 13 years, 6 months ago
              Hm. Nothing there, not even in the page source.
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                elvispresley2k Reply #7, 13 years, 6 months ago
                Quote from: garryn at Mar 28, 2013, 12:50 AM
                I'd suspect, without any more info, something like UTF8 BOM characters in the template ... i.e. something that doesn't cause a problem when being retrieved from the database but that could cause a problem if written to a cache file.


                The offending characters were appearing on resources with *no* template and no caching.

                Quote from: garryn at Mar 28, 2013, 12:50 AM

                If you are copying and pasting your template code from a text editor, try saving as UTF8 (no BOM) first and then copying and pasting ... like I said, just a guess at the moment.

                I tried pasting very simple text from bbEdit into a resource's content area, but it made no difference, the bad characters still appeared. bbEdit is set to "Unicode UTF-8, Unix LF".

                I also tried pasting the text from bbEdit directly into the the resource's content in the database, but this made no difference either, same bad characters inserted at the top of the output.
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                  sottwell Reply #8, 13 years, 6 months ago
                  That's quite a lot of invisible characters.
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