CF2.5's edit box and list objects append text files with extra data that breaks code.

I've also run into this exact character being appended in one of my programs, I think I was also using XLua [edit: nope, but it is using text exchanged with an external process which could have similar issues]. I'll see if I can find it...

Edit

Ah yep here it is:

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I'm actually not even using an edit box, so that's really interesting.

I didn't work on this test further, because of this problem mostly. The program is supposed to be a GUI layer for PHP scripts so you can run them locally more easily.

I had thought maybe this had something to do with Unicode handling but I hadn't come up with ways to test that yet. The really interesting thing is that, at least for me, the character is only appended to the output sometimes (almost always but not quite always). It's very strange.

Here's the fully Event code from this example:

* On Window resize
     WebView2 : Set horizontal size to ClientWidth( "Window Control" )
     WebView2 : Set vertical size to ClientHeight( "Window Control" ) - Height( "StatusBar" )
     StatusBar : Set Y position to ClientHeight( "Window Control" ) - Height( "StatusBar" )
     StatusBar : Set Dimensions to (ClientWidth( "Window Control" ), 25)
     StatusText : Set Y position to ClientHeight( "Window Control" ) - Height( "StatusBar" ) + 2

* Start of Frame
    File : Create the directory AppTempPath$
    Special : Set tmpFile to AppTempPath$ + "output" + Str$(RRandom(11111111, 9999999)) + ".html"
    StatusText : Set alterable string to "temp file: " + tmpFile
    Special : Set cmdLine to " /c " + Appdir$ + "php\php.exe -r ""echo 'hello world';"" 1> " + tmpFile + " 2>&1"
    Special : Execute external program "cmd"cmdLine (wait,hide)
    Special : Set html to GetText$( "Textfile Object", tmpFile )
    WebView2 : Load HTML=html
    File : Delete the file tmpFile

* End of Frame
    File : Delete the directory AppTempPath$

Another interesting point, this is Please login to see this link. which is so suspicious of a hex value (0, the end of string marker in C; followed by 255, the max value of an unsigned byte) that I am really pretty sure it's either mis-handled Unicode data or buffer overflow maybe of some kind... but maybe I'm just on a wild goose chase.

Quote from airways

character is only appended to the output sometimes

Does it depend on whether the string length is a multiple of 2 (i.e. only even, or only odd length)?

Quote from Phi

Does it depend on whether the string length is a multiple of 2 (i.e. only even, or only odd length)?

Good thought, but unfortunately it does not appear this is the case.

I ran it a few times today and I got the proper clean output and character count for "hello world" a few times:

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Then got the extra character and the character count (as returned by CTF's Len() expression) changed to 12. I checked the binary contents of the file, and it has neither a BOM nor any extra characters, exactly 11 bytes:

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