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maskati/#powershell-xml-bom.md

Last active January 9, 2025 07:06
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PowerShell XML with and without BOM
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#powershell-xml-bom.md

PowerShell XML with and without BOM

# ok, returns XmlDocument
Invoke-RestMethod 'https://gist.githubusercontent.com/maskati/69324c8232cc93914b65b8b300a60dc5/raw/a082827c9cb6faacd9f89a5c803d91daef3d1b3e/nobom.xml'

# ok, conversion to XmlDocument fails and returns string with initial BOM character (0xFEFF) UTF8 encoded as 0xEF 0xBB 0xBF
Invoke-RestMethod 'https://gist.githubusercontent.com/maskati/69324c8232cc93914b65b8b300a60dc5/raw/a082827c9cb6faacd9f89a5c803d91daef3d1b3e/bom.xml'

# fails because XmlDocument.LoadXml cannot handle initial BOM character
[xml](Invoke-RestMethod 'https://gist.githubusercontent.com/maskati/69324c8232cc93914b65b8b300a60dc5/raw/a082827c9cb6faacd9f89a5c803d91daef3d1b3e/bom.xml')

# ok, since initial BOM character removed
[xml]((irm 'https://gist.githubusercontent.com/maskati/69324c8232cc93914b65b8b300a60dc5/raw/a082827c9cb6faacd9f89a5c803d91daef3d1b3e/bom.xml') -replace '^[\uFEFF]')

image

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