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users/24959/0002: Update aliases documentation for the addition of the ALIAS_FUNC_DEF option.

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Daniel Shahaf 2020-06-24 10:40:45 +00:00
parent 7f58463dd3
commit 9575f2f1bf
2 changed files with 8 additions and 20 deletions
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@ -1,5 +1,8 @@
2020-06-27 Daniel Shahaf <d.s@daniel.shahaf.name>
* users/24959/0002: Doc/Zsh/grammar.yo: Update aliases
documentation for the addition of the ALIAS_FUNC_DEF option.
* users/24959/0001: Doc/Zsh/builtins.yo, Doc/Zsh/grammar.yo:
Extend documentation of global aliases.

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Doc/Zsh/grammar.yo
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@ -571,6 +571,11 @@ position (if it could be the first word of a simple command),
or if the alias is global.
If the replacement text ends with a space, the next word in the shell input
is always eligible for purposes of alias expansion.
It is an error for the function name, var(word), in the sh-compatible function
definition syntax `var(word) tt(+LPAR()+RPAR()) ...' to be a word that resulted
from alias expansion, unless the tt(ALIAS_FUNC_DEF) option is set.
findex(alias, use of)
cindex(aliases, global)
An alias is defined using the tt(alias) builtin; global aliases
@ -656,26 +661,6 @@ a problem in shell scripts, functions, and code executed with `tt(source)'
or `tt(.)'. Consequently, use of functions rather than aliases is
recommended in non-interactive code.
Note also the unhelpful interaction of aliases and function definitions:
example(alias func='noglob func'
func+LPAR()RPAR() {
echo Do something with $*
})
Because aliases are expanded in function definitions, this causes the
following command to be executed:
example(noglob func+LPAR()RPAR() {
echo Do something with $*
})
which defines tt(noglob) as well as tt(func) as functions with the
body given. To avoid this, either quote the name tt(func) or use the
alternative function definition form `tt(function func)'. Ensuring the
alias is defined after the function works but is problematic if the
code fragment might be re-executed.
texinode(Quoting)()(Aliasing)(Shell Grammar)
sect(Quoting)
cindex(quoting)