Merge two documents (use the attached ones) that already have embedded files with the same names.

Observed: 

The import action is successful, but then exporting the document throws the following exception: 

A strange symbol is added as a name when embedding a file with an empty string as its name argument.

For example exporting the text "\uD83D\uDE0A" with "Segoe UI Symbol" font family should export a single smiling face. Instead the characters are skipped during the export as PdfProcessing is trying to export them as separate char values ("\uD83D" and "\uDE0A") and the font does not contain glyphs corresponding to these char codes.

Wrong glyph measurement results in overlapping text.

Wrong font file loaded when CidType2Font with Standard name.

NullReferenceException is thrown on import because the value of TransformMethod property is not obtained.

A password is asked although Adobe opens the document without one.

Unwanted Stopwatch in DocumentCatalog.

When getting the hash code of CFF (Compact Font Format) font`s UnderlineThickness and there is no such value set in the font file the default value should be returned but an exception is thrown: NullReferenceException: 'Object reference not set to an instance of an object.'

NullReferenceException: 'Object reference not set to an instance of an object.' is thrown on export because the value of TransformMethod property is not obtained.

When decoding a CalRgb ColorSpace image an exception is thrown: NotSupportedException: 'Not supported colorspace: CalRgb'

When exporting a document containing different font types but with the same name and properties same characters are missing or drawn as rectangles.



Observed:

Import-export mangles text with a specific document.

The table is not properly split when it is positioned at the end of the page and the text content is long.

When characters are in the ranges 61472-61566, 61565-61695, 65535-65535 they are correctly exported with Wingdings font. However, when the character value is outside these ranges the font fallback mechanism exports them with different font and this causes wrong glyph rendering in the resulted PDF.

The following code snippet shows how the Wingdings characters can be modified so that they are correctly exported to PDF when converting from WordsProcessing's RadFlowDocument:
RadFlowDocument document = new DocxFormatProvider().Import(File.ReadAllBytes(@"test_document.docx"));
foreach (Run run in document.EnumerateChildrenOfType<Run>())
{
    if (run.FontFamily.GetActualValue(document.Theme).Source.Contains("Wingdings"))
    {
        StringBuilder modifiedText = new StringBuilder();

        foreach (char character in run.Text)
        {
            modifiedText.Append(character > 256 ? character : (char)(character + 61440));
        }

        run.Text = modifiedText.ToString();
    }
}
Workaround: When creating a RadFixedDocument:
using (RadFixedDocumentEditor editor = new RadFixedDocumentEditor(this.fixedDocument))
{
	byte[] data = File.ReadAllBytes(@"CustomFont.ttf");
	FontsRepository.RegisterFont(new FontFamily("CustomFont"), FontStyles.Normal, FontWeights.Normal, data);
	FontBase customFont;
	FontsRepository.TryCreateFont(new FontFamily("CustomFont"), FontStyles.Normal, FontWeights.Normal, out customFont);
	editor.CharacterProperties.Font = customFont;
	string text = "w";

	StringBuilder modifiedText = new StringBuilder();
	foreach (char character in text)
	{
		modifiedText.Append(character > 256 ? character : (char)(character + 61440));
	}

	text = modifiedText.ToString();

	editor.InsertRun(text);
}

Endless loop when trying to parse image data between ID and EI keywords.

Exception when trying to import a file generated with the PdfProcessing library from HTML

OverflowException when importing a document with a signature that has an empty Location string.