Hans van der Meer schrieb am 17.06.2024 um 09:01:
I want to show an errormessage when the macro is undefined. It requires expansion of \xmlatt{#1}{name}. \ifdefined\xmlatt{#1}{name} didn't worked nor \expandafter\ifdefined I thought of the expanding \doif's.
See the attached output of this xmlsetup attached.
\startxmlsetups hvdm:system:macrocall % \doifelsedefined{\xmlatt{#1}{name}} { % %macro without argument % \ifxmlattempty{#1}{arg} \begincsname\xmlatt{#1}{name}\endcsname % %macro with argument % \else \begincsname\xmlatt{#1}{name}\endcsname{\xmlatt{#1}{arg}} \fi } { \ERROR{macro \xmlatt{#1}{name} is not defined} } \stopxmlsetups
I have no idea what's wrong in your code without a proper minimal example. As the example below shows you can use \doifelsedefined in combination with \xmlatt.
\startbuffer[ifdefined] <document> <macro name="bold" arg="text"/> <macro name="hvdm" arg="text"/> </document> \stopbuffer
\startxmlsetups xml:document \xmlflush{#1} \stopxmlsetups
\startxmlsetups xml:macro
\doifelsedefined{\xmlatt{#1}{name}} {\texdefinition{\xmlatt{#1}{name}}{\xmlatt{#1}{arg}}} {{\tttf macro \tex{\xmlatt{#1}{name}} not defined}}
% \ifcsname\xmlatt{#1}{name}\endcsname % \lastnamedcs{\xmlatt{#1}{arg}} % \else % % % \fi
\stopxmlsetups
\startxmlsetups xml:hvdm \xmlsetsetup{\xmldocument}{document|macro}{xml:*} \stopxmlsetups
\xmlregistersetup{xml:hvdm}
\starttext \xmlprocessbuffer{hvdm}{ifdefined}{} \stoptext
Wolfgang