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| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | Etc/FAQ.yo | 10 |
2 files changed, 9 insertions, 5 deletions
@@ -1,3 +1,7 @@ +2021-02-04 Bart Schaefer <schaefer@zsh.org> + + * 47889: Etc/FAQ.yo: Update csh alias equivalences (section 2.3) + 2021-02-03 Joshua Krusell <js.shirin@gmail.com> * 47899: Src/Modules/zutil.c, Test/V12zparseopts.ztst: Improved diff --git a/Etc/FAQ.yo b/Etc/FAQ.yo index a4ffba688..7aeddd89c 100644 --- a/Etc/FAQ.yo +++ b/Etc/FAQ.yo @@ -715,7 +715,8 @@ label(23) enumeration( myeit() If the csh alias references "parameters" (tt(\!:1), tt(\!*) etc.), then in zsh you need a function (referencing tt($1), tt($*) etc.). - Otherwise, you can use a zsh alias. + In recent versions of zsh this can be done by defining an anonymous + function within the alias. Otherwise, a simple zsh alias suffices. myeit() If you use a zsh function, you need to refer _at_least_ to tt($*) in the body (inside the tt({ })). Parameters don't magically @@ -759,7 +760,7 @@ label(23) parameters. (E.g., in a csh alias, a reference to tt(\!:5) will cause an error if 4 or fewer arguments are given; in a zsh function, tt($5) is the empty string if there are 4 or fewer - parameters.) + parameters. Force an error in this example by using tt(${5?}).) myeit() To begin a zsh alias with a - (dash, hyphen) character, use mytt(alias --): @@ -780,9 +781,8 @@ label(23) ) mytt(l) in the function definition is in command position and is expanded as an alias, defining mytt(/bin/ls) and mytt(-F) as functions which call - mytt(/bin/ls), which gets a bit recursive. This can be avoided if you use - mytt(function) to define a function, which doesn't expand aliases. It is - possible to argue for extra warnings somewhere in this mess. + mytt(/bin/ls), which gets a bit recursive. Recent versions of zsh treat + this as an error, but older versions silently create the functions. One workaround for this is to use the "function" keyword instead: verb( |