$dcc.isFileUpload
Checks if a DCC is an upload file transfer
Usage
<boolean> $dcc.isFileUpload
<boolean> $dcc.isFileUpload(<dcc_id:uint>)
Description
Returns 1 if the specified DCC is an upload file transfer and 0 otherwise.
If <dcc_id> is omitted then the DCC Session associated with the current window is assumed.
If <dcc_id> is not a valid DCC session identifier (or it is omitted and the current window has no associated DCC session) then this function prints a warning and returns 0.
See the dcc module documentation for more information.

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