insertmacro and escaped quote => bug ?

Hello,

Here is a code fragment :

!macro foo msg

   MessageBox MB_OK ${msg}

!macroend



Function foobar

   MessageBox MB_OK "$\""

   !insertmacro foo "$\""

FunctionEnd

and the compilation error I get :

Function: "foobar"

MessageBox: 0: """

!insertmacro: foo

Error: unterminated string parsing line at macro:foo:1

Error in macro foo on macroline 1

Either there is something I don't understand about how macro parameters are handled or there is a bug in NSIS.
It seems that escaping rules in strings are different for macro parameters than for function calls.

Here is what you must do:

!macro foo msg

   MessageBox MB_OK '${msg}'

!macroend



Function foobar

   MessageBox MB_OK "$\""

   !insertmacro foo "$\""

FunctionEnd

This is not a bug. You are iserting the double-quote(") character in the MessageBox text parameter and this makes that the parameter be equal to " which still needs an ending " for correct parsing. The $\" is always converted to " - except if reading from files and plug-ins input and output values.

The solution shown by smatte is the correct to insert this character without changes, but you could also use $\$\" as the value to give the original effect you wanted to achieve.

OK. Understood.
Thanks for your replies.