Re: Appending to file.patterns.bash

ed.adasiewicz:

> I find the restriction confusing since what I was trying to do was nothing more than using "variable=value" with value containing the value of another variable - as stated in the docs.

   It's not *another* variable, it's the *same* variable.

   This is similar to 'recursively expanded' variables used in 'make' for as opposed to 'simply expanded' variables.

https://www.gnu.org/software/make/manual/html_node/Recursive-Assignment.html
https://www.gnu.org/software/make/manual/html_node/Simple-Assignment.html

  For an example of why this is done, consider a Java compilation in global properties:

command.compile.*.java=javac $(FileNameExt)

   If $(FileNameExt) was simply expanded when global properties was read then it wouldn't be able to build a Java file opened later. With recursively expanded variables, $(FileNameExt) is expanded just before the command is executed which allows it to see the current value of the file path and build the right file.

   Neil

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