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typeset -p: fix output of nonexistent [0]= array element (#451)

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This fix was backported from ksh 93v- 2012-10-04.

src/cmd/ksh93/sh/nvtree.c: nv_outnode():
- If the array is supposed to be empty, do not continue. This
  avoids outputting a nonexistent [0]= element for empty arrays.

Resolves: https://github.com/ksh93/ksh/issues/420
Co-authored-by: Martijn Dekker <martijn@inlv.org>
This commit is contained in:
Johnothan King 2022-02-05 05:09:25 -08:00 • committed by Martijn Dekker
parent fb696ecfae
commit a8dd1bbd9d
4 changed files with 38 additions and 2 deletions
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4
src/cmd/ksh93/sh/nvtree.c
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@ -556,9 +556,11 @@ void nv_outnode(Namval_t *np, Sfio_t* out, int indent, int special)
Indent = indent;
if(ap)
{
sfputc(out,'(');
if(array_elem(ap)==0)
return;
if(!(ap->nelem&ARRAY_SCAN))
nv_putsub(np,NIL(char*),ARRAY_SCAN);
sfputc(out,'(');
if(indent>=0)
{
sfputc(out,'\n');