diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | Doc/Zsh/expn.yo | 14 | ||||
| -rw-r--r-- | Src/subst.c | 11 |
3 files changed, 29 insertions, 2 deletions
@@ -1,3 +1,9 @@ +2017-02-25 Barton E. Schaefer <schaefer@zsh.org> + + * 40640 (plus doc typo fixed): Doc/Zsh/expn.yo, Src/subst.c: the + (A) parameter flag forces array result even if assignment syntax + is not used + 2017-02-25 Daniel Shahaf <d.s@daniel.shahaf.name> * unposted: Completion/Zsh/Context/_brace_parameter: Port 40617 diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index 43ecd3155..016d8aef0 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -955,15 +955,25 @@ This is distinct from em(field splitting) by the tt(f), tt(s) or tt(z) flags, which still applies within each array element. ) item(tt(A))( -Assign as an array parameter with `tt(${)...tt(=)...tt(})', +Convert the substitution into an array expression, even if it otherwise +would be scalar. This has lower precedence than subscripting, so one +level of nested expansion is required in order that subscripts apply +to array elements. Thus tt(${${LPAR()A)tt(RPAR())var(name)tt(}[1]}) +yields the full value of var(name) when var(name) is scalar. + +This assigns an array parameter with `tt(${)...tt(=)...tt(})', `tt(${)...tt(:=)...tt(})' or `tt(${)...tt(::=)...tt(})'. -If this flag is repeated (as in `tt(AA)'), assign an associative +If this flag is repeated (as in `tt(AA)'), assigns an associative array parameter. Assignment is made before sorting or padding; if field splitting is active, the var(word) part is split before assignment. The var(name) part may be a subscripted range for ordinary arrays; when assigning an associative array, the var(word) part em(must) be converted to an array, for example by using `tt(${(AA)=)var(name)tt(=)...tt(})' to activate field splitting. + +Surrounding context such as additional nesting or use of the value +in a scalar assignment may cause the array to be joined back into +a single string again. ) item(tt(a))( Sort in array index order; when combined with `tt(O)' sort in reverse diff --git a/Src/subst.c b/Src/subst.c index 4df53bdb7..02dbe2864 100644 --- a/Src/subst.c +++ b/Src/subst.c @@ -2902,6 +2902,7 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags, } else setaparam(idbeg, a); isarr = 1; + arrasg = 0; } else { untokenize(val); setsparam(idbeg, ztrdup(val)); @@ -3784,6 +3785,16 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags, insertlinknode(l, n, dupstring(fstr)); /* appended, no incnode */ *fstr = '\0'; } + if (arrasg && !isarr) { + /* + * Caller requested this be forced to an array even if scalar. + * Any point in distinguishing arrasg == 2 (assoc array) here? + */ + l->list.flags |= LF_ARRAY; + aval = hmkarray(val); + isarr = 1; + DPUTS(!val, "value is NULL in paramsubst, empty array"); + } if (isarr) { char *x; char *y; |