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user/19006: document position of RC_EXPAND_PARAM in parameter subst

This commit is contained in:
Peter Stephenson 2014-08-03 20:31:21 +01:00
parent b79ef8caaf
commit ebc27890da
2 changed files with 14 additions and 4 deletions

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@ -1,3 +1,8 @@
2014-08-03 Peter Stephenson <p.w.stephenson@ntlworld.com>
* users/19006: Doc/Zsh/expn.yo: document position of
RC_EXPAND_PARAM handling during parameter substitution.
2014-08-01 Peter Stephenson <p.stephenson@samsung.com>
* 32932: Src/glob.c, Src/utils.c: add hmkarray() and

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@ -1407,16 +1407,21 @@ item(tt(19.) em(Ordering))(
If the result is still an array and one of the `tt((o))' or `tt((O))' flags
was present, the array is reordered.
)
item(tt(20.) em(Re-evaluation))(
item(tt(20.) tt(RC_EXPAND_PARAM))(
At this point the decision is made whether any resulting array elements
are to be combined element by element with surrounding text, as given
by either the tt(RC_EXPAND_PARAM) option or the `tt(^)' flag.
)
item(tt(21.) em(Re-evaluation))(
Any `tt((e))' flag is applied to the value, forcing it to be re-examined
for new parameter substitutions, but also for command and arithmetic
substitutions.
)
item(tt(21.) em(Padding))(
item(tt(22.) em(Padding))(
Any padding of the value by the `tt(LPAR()l.)var(fill)tt(.RPAR())' or
`tt(LPAR()r.)var(fill)tt(.RPAR())' flags is applied.
)
item(tt(22.) em(Semantic joining))(
item(tt(23.) em(Semantic joining))(
In contexts where expansion semantics requires a single word to
result, all words are rejoined with the first character of tt(IFS)
between. So in `tt(${LPAR()P)tt(RPAR()${LPAR()f)tt(RPAR()lines}})'
@ -1425,7 +1430,7 @@ joined again before the tt(P) flag can be applied.
If a single word is not required, this rule is skipped.
)
item(tt(23.) em(Empty argument removal))(
item(tt(24.) em(Empty argument removal))(
If the substitution does not appear in double quotes, any resulting
zero-length argument, whether from a scalar or an element of an array,
is elided from the list of arguments inserted into the command line.