Bug? "More than one build script specified" when calling build.ps1 with a custom cake script and extra parameters

What You Are Seeing?

When I specify a custom cake script with extra parameters using the build.ps1 bootstrap file, I get the following error:

More than one build script specified.

Note: If I remove the extra parameter that I would like to pass to my script everything works

What is Expected?

Cake executes using the custom cake script file

What version of Cake are you using?

0.13.0

Are you running on a 32 or 64 bit system?

64

What environment are you running on? Windows? Linux? Mac?

Windows

Are you running on a CI Server? If so, which one?

None

How Did You Get This To Happen? (Steps to Reproduce)

.\build.ps1 -Script “3rdPartyPackages.cake” -Settings=3rdPartyPackages.settings.json

Output Log

.\build.ps1 -Script "3rdPartyPackages.cake" -Settings="3rdPartyPackages.settings.json"
Preparing to run build script (3rdPartyPackages.cake)...
Running build script...
& "E:\Projects\tools\Cake\Cake.exe" "3rdPartyPackages.cake" -target="Default" -configuration="Release" -verbosity="Verbose"    -Settings=3rdPartyPackages.settin
gs\.json
More than one build script specified.

Usage: Cake.exe [build-script] [-verbosity=value]
                [-showdescription] [-dryrun] [..]

[kentcb]

Ugh, I just found #1690 which suggests the syntax I need is --target=Clean, which works fine. Seems like the main problem here is the confusing error message and the (lack of) docs.

[kcamp]

I have seen this before, it seems to come from when the extra param value contains a ‘.’ > .\build.ps1 -Target "my-target" -Version="1.2.3"

this fails with the same output. from the notes i have on my fix, i looked at the cake source and see that the extra arguments will support ‘-’ or ‘–’ syntax.

i was able to change my use-case to the following to get it to work without modifying the build script or the underlying binary. > .\build.ps1 -Target "my-target" --Version="1.2.3"

this is with 0.15.2