Cloned the cudatext code from github.
It needed ATSynEdit_package 2.1; I had 1.7.
Cloned the new ATSynEdit_package; compiling found it needed ATBinHex.pas.BitmapResizeBySteps which declaration was present in ATBinHex.
Recompiled ATBinHex and, again, got the message that ATSynEdit needed BitmapResizeBySteps.
Uninstalled ATSynEdit.
Now AtBinHex compiled and installed cleanly.
Cloned AtSynEdit from github, again.
Compiling got the same error message that AtSynEdit needed BitmapResizeBySteps.
Suggestions, please.