read-only functions

read-only functions

[Martijn Dekker]

bash and yash have read-only functions using:

	readonly -f function_name

Could this be a feature worth adding to zsh?

TIA,

- M.

Re: read-only functions

[Bart Schaefer]

On Feb 3, 12:22am, Martijn Dekker wrote:
} Subject: read-only functions
}
} bash and yash have read-only functions using:
} 
} 	readonly -f function_name
} 
} Could this be a feature worth adding to zsh?
} 
} TIA,
} 
} - M.
}-- End of excerpt from Martijn Dekker

On Feb 3, 12:22am, Martijn Dekker wrote:
}
} 	readonly -f function_name
} 
} Could this be a feature worth adding to zsh?

Related question:  Given that presently it doesn't mean that, why does
reaonly even accept the -f option?  All it does is the wrong thing,
i.e., makes "readonly -f" behave like "functions" (it should at least
behave like "functions -r" which is currently an error).

Obviously typeset -r accepts -f because both -r and -f independently do
mean something and in general we haven't rigorously coded for mutually
exclusive options.

Anyway there doesn't seem to be any particular obstacle to applying
the PM_READONLY flag to shfunc nodes.

Re: read-only functions

[Bart Schaefer]

[Sorry about the double-inclusion in the previous message; something
strange happened in the handshake between email client and external
text editor.]

On Feb 2,  5:32pm, Bart Schaefer wrote:
}
} Anyway there doesn't seem to be any particular obstacle to applying
} the PM_READONLY flag to shfunc nodes.

After a few minute staring at code and the accompanying further thought,
this seems to be fundamentally not compatible with autoloading.  The
number of special cases to handle is doubled, among other things.