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15264: improved doc for variant complex commands

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Peter Stephenson 2001-07-05 17:23:05 +00:00
parent 979cbb0dc3
commit c4d9fa80a5
2 changed files with 20 additions and 8 deletions
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Doc/Zsh/grammar.yo
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@ -272,11 +272,16 @@ cindex(commands, alternate forms for complex)
Many of zsh's complex commands have alternate forms. These particular
versions of complex commands should be considered deprecated and may be
removed in the future. The versions in the previous section should be
preferred instead. The short versions below only work if var(sublist)
is of the form `tt({) var(list) tt(})' or if the tt(SHORT_LOOPS)
option is set. In this case, the test part of the loop must also be
suitably delimited, such as by `tt([[ ... ]])' or `tt((( ... )))', else
the end of the test will not be recognized.
preferred instead.
The short versions below only work if var(sublist) is of the form `tt({)
var(list) tt(})' or if the tt(SHORT_LOOPS) option is set. For the tt(if),
tt(while) and tt(until) commands, in both these cases the test part of the
loop must also be suitably delimited, such as by `tt([[ ... ]])' or `tt(((
... )))', else the end of the test will not be recognized. For the
tt(for), tt(repeat), tt(case) and tt(select) commands no such special form
for the arguments is necessary, but the other condition (the special form
of var(sublist) or use of the tt(SHORT_LOOPS) option) still applies.
startitem()
item(tt(if) var(list) tt({) var(list) tt(}) [ tt(elif) var(list) tt({) var(list) tt(}) ] ... [ tt(else {) var(list) tt(}) ])(
@ -296,7 +301,8 @@ example(if true { # Does not work!
does em(not), since the test is not suitably delimited.
)
item(tt(if) var(list) var(sublist))(
A short form of the alternate `if'.
A short form of the alternate `if'. The same limitations on the form of
var(list) apply as for the previous form.
)
item(tt(for) var(name) ... tt(LPAR()) var(word) ... tt(RPAR()) var(sublist))(
A short form of tt(for).
@ -312,10 +318,12 @@ item(tt(foreach) var(name) ... tt(LPAR()) var(word) ... tt(RPAR()) var(list) tt(
Another form of tt(for).
)
item(tt(while) var(list) tt({) var(list) tt(}))(
An alternative form of tt(while).
An alternative form of tt(while). Note the limitations on the form of
var(list) mentioned above.
)
item(tt(until) var(list) tt({) var(list) tt(}))(
An alternative form of tt(until).
An alternative form of tt(until). Note the limitations on the form of
var(list) mentioned above.
)
item(tt(repeat) var(word) var(sublist))(
This is a short form of tt(repeat).