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37115: update for changes in ${(P)...} evaluation.

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Barton E. Schaefer 2015-11-14 21:22:17 -08:00
parent 9ab9da49f7
commit 9ce000db22
3 changed files with 28 additions and 6 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2015-11-14 Barton E. Schaefer <schaefer@zsh.org>
* 37115: Completion/Unix/Commmand/_git, Doc/Zsh/expn.yo: update
for changes in ${(P)...} evaluation.
2015-11-13 Daniel Shahaf <d.s@daniel.shahaf.name>
* unposted: Src/Zle/zle_tricky.c: Make $EDITOR's

2
Completion/Unix/Command/_git
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@ -5244,7 +5244,7 @@ _git_commands () {
for cmdtype in aliases $cmdtypes; do
local -a ${cmdtype}_d
(( $#disp )) && set -A ${cmdtype}_d \
${${(Pr.COLUMNS-4.)cmdtype/(#s)(#m)[^:]##:/${(r.len.)MATCH[1,-2]} $sep }%% #}
${${(r.COLUMNS-4.)${(P)cmdtype}/(#s)(#m)[^:]##:/${(r.len.)MATCH[1,-2]} $sep }%% #}
alts+=( "${cmdtype//_/-}:${${cmdtype//_/ }%%(e|)s}:compadd ${(e)disp} -a ${cmdtype}_m" )
done

27
Doc/Zsh/expn.yo
View file

@ -1380,9 +1380,13 @@ outermost. The flags are not propagated up to enclosing
substitutions; the nested substitution will return either a scalar or an
array as determined by the flags, possibly adjusted for quoting. All the
following steps take place where applicable at all levels of substitution.
Note that, unless the `tt((P))' flag is present, the flags and any subscripts
apply directly to the value of the nested substitution; for example, the
expansion tt(${${foo}}) behaves exactly the same as tt(${foo}).
Note that, unless the `tt((P))' flag is present, the flags and any
subscripts apply directly to the value of the nested substitution; for
example, the expansion tt(${${foo}}) behaves exactly the same as
tt(${foo}). When the `tt((P))' flag is present in a nested substitution,
the other substitution rules are applied to the value em(before) it is
interpreted as a name, so tt(${${(P)foo}}) may differ from tt(${(P)foo}).
At each nested level of substitution, the substituted words undergo all
forms of single-word substitution (i.e. not filename generation), including
@ -1400,6 +1404,12 @@ in particular the tt(L), tt(R), tt(Z), tt(u) and tt(l) flags for padding
and capitalization, are applied directly to the parameter value.
Note these flags are options to the command, e.g. `tt(typeset -Z)';
they are not the same as the flags used within parameter substitutions.
At the outermost level of substitution, the `tt((P))' flag ignores these
transformations and uses the unmodified value of the parameter as the name
to be replaced. This is usually the desired behavior because padding may
make the value syntactically illegal as a parameter name, but if
capitalization changes are desired, use the tt(${${(P)foo}}) form.
)
item(tt(3.) em(Parameter subscripting))(
If the value is a raw parameter reference with a subscript, such as
@ -1413,8 +1423,10 @@ original array). Any number of subscripts may appear. Flags such as
tt((k)) and tt((v)) which alter the result of subscripting are applied.
)
item(tt(4.) em(Parameter name replacement))(
The effect of any tt((P)) flag, which treats the value so far as a
parameter name and replaces it with the corresponding value, is applied.
At the outermost level of nesting only, the effect of any tt((P)) flag,
which treats the value so far as a parameter name and replaces it with the
corresponding value, is applied. This replacement occurs later if the
tt((P)) flag appears in a nested substitution.
)
item(tt(5.) em(Double-quoted joining))(
If the value after this process is an array, and the substitution
@ -1534,6 +1546,11 @@ Strictly speaking, the removal happens later as the same happens with
other forms of substitution; the point to note here is simply that
it occurs after any of the above parameter operations.
)
item(tt(25.) em(Parameter name replacement))(
If the `tt((P))' flag is present and this has not yet been done, the value
so far is looked up as a parameter name. Errors may occur if the value is
neither a valid identifier nor an identifier plus subscript expression.
)
enditem()
subsect(Examples)