merge the nameref code, using mksh standard scoping as discussed
This commit is contained in:
tg
parent
574d6725aa
commit
9531e12b36
115
check.t
115
check.t
@ -1,4 +1,4 @@
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# $MirOS: src/bin/mksh/check.t,v 1.302 2009/08/30 21:01:59 tg Exp $
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# $MirOS: src/bin/mksh/check.t,v 1.303 2009/09/06 17:42:11 tg Exp $
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# $OpenBSD: bksl-nl.t,v 1.2 2001/01/28 23:04:56 niklas Exp $
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# $OpenBSD: history.t,v 1.5 2001/01/28 23:04:56 niklas Exp $
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# $OpenBSD: read.t,v 1.3 2003/03/10 03:48:16 david Exp $
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@ -4197,7 +4197,7 @@ name: xxx-param-subst-qmark-1
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description:
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Check suppresion of error message with null string. According to
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POSIX, it shouldn't print the error as 'word' isn't ommitted.
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ksh88, Solaris /bin/sh and /usr/xpg4/bin/sh all print the error,
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ksh88/93, Solaris /bin/sh and /usr/xpg4/bin/sh all print the error,
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that's why the condition is reversed.
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stdin:
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unset foo
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@ -4731,6 +4731,7 @@ expected-stdout:
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integer='typeset -i'
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local=typeset
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login='exec login'
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nameref='typeset -n'
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nohup='nohup '
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r='fc -e -'
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source='PATH=$PATH:. command .'
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@ -4753,6 +4754,7 @@ expected-stdout:
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integer='typeset -i'
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local=typeset
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login='exec login'
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nameref='typeset -n'
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nohup='nohup '
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r='fc -e -'
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source='PATH=$PATH:. command .'
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@ -4799,6 +4801,7 @@ expected-stdout:
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integer='typeset -i'
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local=typeset
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login='exec login'
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nameref='typeset -n'
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nohup='nohup '
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r='fc -e -'
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source='PATH=$PATH:. command .'
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@ -4823,6 +4826,7 @@ expected-stdout:
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integer='typeset -i'
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local=typeset
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login='exec login'
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nameref='typeset -n'
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nohup='nohup '
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r='fc -e -'
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source='PATH=$PATH:. command .'
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@ -4846,6 +4850,7 @@ expected-stdout:
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integer='typeset -i'
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local=typeset
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login='exec login'
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nameref='typeset -n'
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nohup='nohup '
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r='fc -e -'
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source='PATH=$PATH:. command .'
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@ -4868,6 +4873,7 @@ expected-stdout:
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integer='typeset -i'
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local=typeset
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login='exec login'
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nameref='typeset -n'
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nohup='nohup '
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r='fc -e -'
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source='PATH=$PATH:. command .'
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@ -5006,6 +5012,33 @@ expected-stdout:
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g 0<0>1<1>2<4> = g
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h 0<0>1<1>2<4> = h
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---
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name: arrays-7
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description:
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Check if we can get the array keys (indices) for indexed arrays,
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Korn shell style, in some corner cases
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stdin:
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print !arz: ${!arz}
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print !arz[0]: ${!arz[0]}
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print !arz[1]: ${!arz[1]}
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arz=foo
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print !arz: ${!arz}
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print !arz[0]: ${!arz[0]}
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print !arz[1]: ${!arz[1]}
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unset arz
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print !arz: ${!arz}
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print !arz[0]: ${!arz[0]}
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print !arz[1]: ${!arz[1]}
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expected-stdout:
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!arz: 0
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!arz[0]:
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!arz[1]:
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!arz: arz
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!arz[0]: 0
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!arz[1]:
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!arz: 0
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!arz[0]:
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!arz[1]:
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---
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name: varexpand-substr-1
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description:
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Check if bash-style substring expansion works
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@ -6100,3 +6133,81 @@ expected-stdout:
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mypid=nz
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=15
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---
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name: nameref-1
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description:
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Testsuite for nameref (bound variables)
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stdin:
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bar=global
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typeset -n ir2=bar
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typeset -n ind=ir2
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print !ind: ${!ind}
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print ind: $ind
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print !ir2: ${!ir2}
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print ir2: $ir2
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typeset +n ind
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print !ind: ${!ind}
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print ind: $ind
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typeset -n ir2=ind
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print !ir2: ${!ir2}
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print ir2: $ir2
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set|grep ^ir2|sed 's/^/s1: /'
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typeset|grep ' ir2'|sed -e 's/^/s2: /' -e 's/nameref/typeset -n/'
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blub=(e1 e2 e3)
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typeset -n ind=blub
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typeset -n ir2=blub[2]
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print !ind[1]: ${!ind[1]}
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print !ir2: $!ir2
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print ind[1]: ${ind[1]}
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print ir2: $ir2
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expected-stdout:
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!ind: bar
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ind: global
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!ir2: bar
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ir2: global
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!ind: ind
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ind: ir2
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!ir2: ind
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ir2: ir2
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s1: ir2=ind
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s2: typeset -n ir2
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!ind[1]: 1
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!ir2: ir2
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ind[1]: e2
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ir2: e3
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---
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name: nameref-2da
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description:
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Testsuite for nameref (bound variables)
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Functions, argument given directly, after local
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stdin:
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function foo {
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typeset bar=lokal baz=auch
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typeset -n v=bar
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print entering
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print !v: ${!v}
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print !bar: ${!bar}
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print !baz: ${!baz}
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print bar: $bar
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print v: $v
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v=123
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print bar: $bar
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print v: $v
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print exiting
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}
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bar=global
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print bar: $bar
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foo bar
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print bar: $bar
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expected-stdout:
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bar: global
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entering
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!v: bar
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!bar: bar
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!baz: baz
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bar: lokal
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v: lokal
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bar: 123
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v: 123
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exiting
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bar: global
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---
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26
eval.c
26
eval.c
@ -22,7 +22,7 @@
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.68 2009/08/28 22:39:09 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.69 2009/09/06 17:42:12 tg Exp $");
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/*
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* string expansion
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@ -1021,8 +1021,7 @@ varsub(Expand *xp, const char *sp, const char *word,
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if (!(vp->flag&ISSET))
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continue;
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XPput(wv, c == '!' ? shf_smprintf("%lu",
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vp->flag & AINDEX ?
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(unsigned long)vp->ua.index : 0) :
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arrayindex(vp)) :
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str_val(vp));
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}
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if (XPsize(wv) == 0) {
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@ -1037,14 +1036,27 @@ varsub(Expand *xp, const char *sp, const char *word,
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state = XARG;
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}
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} else {
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if (*sp == '!' && sp[1])
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return (-1);
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/* Can't assign things like $! or $1 */
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if ((stype & 0x7f) == '=' &&
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ctype(*sp, C_VAR1 | C_DIGIT))
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return (-1);
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xp->var = global(sp);
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xp->str = str_val(xp->var);
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if (*sp == '!' && sp[1]) {
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++sp;
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xp->var = global(sp);
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if (cstrchr(sp, '[')) {
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if (xp->var->flag & ISSET)
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xp->str = shf_smprintf("%lu",
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arrayindex(xp->var));
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else
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xp->str = null;
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} else if (xp->var->flag & ISSET)
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xp->str = xp->var->name;
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else
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xp->str = "0"; /* ksh93 compat */
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} else {
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xp->var = global(sp);
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xp->str = str_val(xp->var);
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}
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state = XSUB;
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}
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}
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26
funcs.c
26
funcs.c
@ -25,7 +25,7 @@
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.128 2009/08/30 21:02:00 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.129 2009/09/06 17:42:12 tg Exp $");
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#if HAVE_KILLPG
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/*
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@ -47,6 +47,8 @@ __RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.128 2009/08/30 21:02:00 tg Exp $");
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#define c_ulimit c_label
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#endif
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extern uint8_t set_refflag;
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/* A leading = means assignments before command are kept;
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* a leading * means a POSIX special builtin;
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* a leading + means a POSIX regular builtin
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@ -896,7 +898,7 @@ c_typeset(const char **wp)
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}
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/* see comment below regarding possible opions */
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opts = istset ? "L#R#UZ#afi#lprtux" : "p";
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opts = istset ? "L#R#UZ#afi#lnprtux" : "p";
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fieldstr = basestr = NULL;
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builtin_opt.flags |= GF_PLUSOPT;
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@ -947,6 +949,9 @@ c_typeset(const char **wp)
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case 'l':
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flag = LCASEV;
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break;
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case 'n':
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set_refflag = (builtin_opt.info & GI_PLUS) ? 2 : 1;
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break;
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case 'p':
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/* export, readonly: POSIX -p flag */
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/* typeset: show values as well */
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@ -995,13 +1000,14 @@ c_typeset(const char **wp)
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builtin_opt.optind++;
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}
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if (func && ((fset|fclr) & ~(TRACE|UCASEV_AL|EXPORT))) {
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if (func && (((fset|fclr) & ~(TRACE|UCASEV_AL|EXPORT)) || set_refflag)) {
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bi_errorf("only -t, -u and -x options may be used with -f");
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set_refflag = 0;
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return (1);
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}
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if (wp[builtin_opt.optind]) {
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/* Take care of exclusions.
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* At this point, flags in fset are cleared in fclr and vise
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* At this point, flags in fset are cleared in fclr and vice
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* versa. This property should be preserved.
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*/
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if (fset & LCASEV) /* LCASEV has priority over UCASEV_AL */
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@ -1015,8 +1021,8 @@ c_typeset(const char **wp)
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/* Setting these attributes clears the others, unless they
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* are also set in this command
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*/
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if (fset & (LJUST | RJUST | ZEROFIL | UCASEV_AL | LCASEV |
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INTEGER | INT_U | INT_L))
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if ((fset & (LJUST | RJUST | ZEROFIL | UCASEV_AL | LCASEV |
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INTEGER | INT_U | INT_L)) || set_refflag)
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fclr |= ~fset & (LJUST | RJUST | ZEROFIL | UCASEV_AL |
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LCASEV | INTEGER | INT_U | INT_L);
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}
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@ -1047,9 +1053,11 @@ c_typeset(const char **wp)
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"%s() %T\n", wp[i], f->val.t);
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} else if (!typeset(wp[i], fset, fclr, field, base)) {
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bi_errorf("%s: not identifier", wp[i]);
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set_refflag = 0;
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return (1);
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}
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}
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set_refflag = 0;
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return (rv);
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}
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@ -1112,6 +1120,8 @@ c_typeset(const char **wp)
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* be suitable for re-entry...
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*/
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shf_puts("typeset ", shl_stdout);
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if (((vp->flag&(ARRAY|ASSOC))==ASSOC))
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shf_puts("-n ", shl_stdout);
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if ((vp->flag&INTEGER))
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shf_puts("-i ", shl_stdout);
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if ((vp->flag&EXPORT))
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@ -1160,9 +1170,7 @@ c_typeset(const char **wp)
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if ((vp->flag&ARRAY) && any_set)
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shprintf("%s[%lu]",
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vp->name,
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vp->flag & AINDEX ?
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(unsigned long)vp->ua.index :
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0);
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arrayindex(vp));
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else
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shf_puts(vp->name, shl_stdout);
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if (thing == '-' && (vp->flag&ISSET)) {
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3
main.c
3
main.c
@ -33,7 +33,7 @@
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#include <locale.h>
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#endif
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__RCSID("$MirOS: src/bin/mksh/main.c,v 1.143 2009/08/29 11:26:44 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/main.c,v 1.144 2009/09/06 17:42:13 tg Exp $");
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extern char **environ;
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@ -67,6 +67,7 @@ static const char *initcoms[] = {
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"autoload=typeset -fu",
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"functions=typeset -f",
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"history=fc -l",
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"nameref=typeset -n",
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"nohup=nohup ",
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r_fc_e_,
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"source=PATH=$PATH:. command .",
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31
mksh.1
31
mksh.1
@ -1,4 +1,4 @@
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.\" $MirOS: src/bin/mksh/mksh.1,v 1.180 2009/09/05 17:12:49 tg Exp $
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.\" $MirOS: src/bin/mksh/mksh.1,v 1.181 2009/09/06 17:42:13 tg Exp $
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.\" $OpenBSD: ksh.1,v 1.129 2009/05/28 06:09:06 jmc Exp $
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.\"-
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.\" Copyright © 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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@ -48,7 +48,7 @@
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.el .xD \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8
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..
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.\"-
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.Dd $Mdocdate: September 5 2009 $
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.Dd $Mdocdate: September 6 2009 $
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.Dt MKSH 1
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.Os MirBSD
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.Sh NAME
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@ -883,6 +883,7 @@ history=\*(aqfc \-l\*(aq
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integer=\*(aqtypeset \-i\*(aq
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local=\*(aqtypeset\*(aq
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login=\*(aqexec login\*(aq
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nameref=\*(aqtypeset -n\*(aq
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nohup=\*(aqnohup \*(aq
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r=\*(aqfc \-e \-\*(aq
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stop=\*(aqkill \-STOP\*(aq
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@ -1261,6 +1262,18 @@ of the string value of parameter
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The number of elements in the array
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.Ar name .
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.Pp
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.It Pf ${! Ns Ar name Ns }
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The name of the variable referred to by
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.Ar name .
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This will be
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.Ar name
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except when
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.Ar name
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is a name reference (bound variable), created by the
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.Ic nameref
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command (which is an alias for
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.Ic typeset Fl n ) .
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.Pp
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.It Pf ${! Ns Ar name Ns [*]}
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.It Pf ${! Ns Ar name Ns [@]}
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The names of indices (keys) in the array
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@ -4110,7 +4123,7 @@ A command that exits with a zero value.
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.Pp
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.It Xo
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.Ic typeset
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.Oo Op Ic +\-alprtUux
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.Oo Op Ic +\-alpnrtUux
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.Op Fl L Ns Op Ar n
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.Op Fl R Ns Op Ar n
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.Op Fl Z Ns Op Ar n
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@ -4191,6 +4204,18 @@ All upper case characters in values are converted to lower case.
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when used with the
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.Fl i
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option.)
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.It Fl n
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Create a bound variable (name reference): any access to the variable
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.Ar name
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will access the variable
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.Ar value
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in the current scope (this is different from
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.At
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.Nm ksh93 ! )
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instead.
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This can be used by functions to access variables whose names are
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passed as parametres, instead of using
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.Ic eval .
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.It Fl p
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Print complete
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.Ic typeset
|
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6
sh.h
6
sh.h
@ -134,7 +134,7 @@
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#endif
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#ifdef EXTERN
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__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.337 2009/08/30 21:02:01 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.338 2009/09/06 17:42:14 tg Exp $");
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#endif
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#define MKSH_VERSION "R39 2009/08/30"
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@ -906,6 +906,7 @@ struct tbl { /* table item */
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#define EXPRINEVAL BIT(23) /* contents currently being evaluated */
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#define EXPRLVALUE BIT(24) /* useable as lvalue (temp flag) */
|
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#define AINDEX BIT(25) /* array index >0 = ua.index filled in */
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#define ASSOC BIT(26) /* ARRAY ? associative : reference */
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/* flag bits used for taliases/builtins/aliases/keywords/functions */
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#define KEEPASN BIT(8) /* keep command assignments (eg, var=x cmd) */
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#define FINUSE BIT(9) /* function being executed */
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@ -919,6 +920,9 @@ struct tbl { /* table item */
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#define USERATTRIB (EXPORT|INTEGER|RDONLY|LJUST|RJUST|ZEROFIL|\
|
||||
LCASEV|UCASEV_AL|INT_U|INT_L)
|
||||
|
||||
#define arrayindex(vp) ((unsigned long)((vp)->flag & AINDEX ? \
|
||||
(vp)->ua.index : 0))
|
||||
|
||||
/* command types */
|
||||
#define CNONE 0 /* undefined */
|
||||
#define CSHELL 1 /* built-in */
|
||||
|
||||
65
var.c
65
var.c
@ -22,7 +22,7 @@
|
||||
|
||||
#include "sh.h"
|
||||
|
||||
__RCSID("$MirOS: src/bin/mksh/var.c,v 1.86 2009/08/28 22:44:47 tg Exp $");
|
||||
__RCSID("$MirOS: src/bin/mksh/var.c,v 1.87 2009/09/06 17:42:15 tg Exp $");
|
||||
|
||||
/*
|
||||
* Variables
|
||||
@ -47,6 +47,8 @@ static const char *array_index_calc(const char *, bool *, uint32_t *);
|
||||
static int rnd_get(void);
|
||||
static void rnd_set(unsigned long);
|
||||
|
||||
uint8_t set_refflag = 0;
|
||||
|
||||
/*
|
||||
* create a new block for function calls and simple commands
|
||||
* assume caller has allocated and set up e->loc
|
||||
@ -135,7 +137,7 @@ initvar(void)
|
||||
}
|
||||
|
||||
/* Used to calculate an array index for global()/local(). Sets *arrayp to
|
||||
* non-zero if this is an array, sets *valp to the array index, returns
|
||||
* true if this is an array, sets *valp to the array index, returns
|
||||
* the basename of the array.
|
||||
*/
|
||||
static const char *
|
||||
@ -143,9 +145,39 @@ array_index_calc(const char *n, bool *arrayp, uint32_t *valp)
|
||||
{
|
||||
const char *p;
|
||||
int len;
|
||||
char *ap = NULL;
|
||||
|
||||
*arrayp = false;
|
||||
redo_from_ref:
|
||||
p = skip_varname(n, false);
|
||||
if (!set_refflag && (p != n) && ksh_isalphx(n[0])) {
|
||||
struct block *l = e->loc;
|
||||
struct tbl *vp;
|
||||
char *vn;
|
||||
uint32_t h;
|
||||
|
||||
strndupx(vn, n, p - n, ATEMP);
|
||||
h = hash(vn);
|
||||
/* check if this is a reference */
|
||||
for (l = e->loc; ; l = l->next) {
|
||||
if ((vp = ktsearch(&l->vars, vn, h)) != NULL)
|
||||
break;
|
||||
if (l->next == NULL)
|
||||
break;
|
||||
}
|
||||
afree(vn, ATEMP);
|
||||
if (vp && (vp->flag & (DEFINED|ASSOC|ARRAY)) ==
|
||||
(DEFINED|ASSOC)) {
|
||||
char *cp;
|
||||
|
||||
/* gotcha! */
|
||||
cp = shf_smprintf("%s%s", str_val(vp), p);
|
||||
afree(ap, ATEMP);
|
||||
n = ap = cp;
|
||||
goto redo_from_ref;
|
||||
}
|
||||
}
|
||||
|
||||
if (p != n && *p == '[' && (len = array_ref_len(p))) {
|
||||
char *sub, *tmp;
|
||||
mksh_ari_t rval;
|
||||
@ -646,6 +678,9 @@ typeset(const char *var, Tflag set, Tflag clr, int field, int base)
|
||||
if (*val == '[') {
|
||||
int len;
|
||||
|
||||
if (set_refflag)
|
||||
errorf("%s: reference variable cannot be an array",
|
||||
var);
|
||||
len = array_ref_len(val);
|
||||
if (len == 0)
|
||||
return (NULL);
|
||||
@ -680,6 +715,26 @@ typeset(const char *var, Tflag set, Tflag clr, int field, int base)
|
||||
|
||||
vp = (set&LOCAL) ? local(tvar, (set & LOCAL_COPY) ? true : false) :
|
||||
global(tvar);
|
||||
if (set_refflag == 2 && (vp->flag & (ARRAY|ASSOC)) == ASSOC)
|
||||
vp->flag &= ~ASSOC;
|
||||
else if (set_refflag == 1) {
|
||||
if (vp->flag & ARRAY) {
|
||||
struct tbl *a, *tmp;
|
||||
|
||||
/* Free up entire array */
|
||||
for (a = vp->u.array; a; ) {
|
||||
tmp = a;
|
||||
a = a->u.array;
|
||||
if (tmp->flag & ALLOC)
|
||||
afree(tmp->val.s, tmp->areap);
|
||||
afree(tmp, tmp->areap);
|
||||
}
|
||||
vp->u.array = NULL;
|
||||
vp->flag &= ~ARRAY;
|
||||
}
|
||||
vp->flag |= ASSOC;
|
||||
}
|
||||
|
||||
set &= ~(LOCAL|LOCAL_COPY);
|
||||
|
||||
vpbase = (vp->flag & ARRAY) ? global(arrayname(var)) : vp;
|
||||
@ -803,8 +858,8 @@ unset(struct tbl *vp, int array_ref)
|
||||
}
|
||||
|
||||
/* return a pointer to the first char past a legal variable name (returns the
|
||||
* argument if there is no legal name, returns * a pointer to the terminating
|
||||
* null if whole string is legal).
|
||||
* argument if there is no legal name, returns a pointer to the terminating
|
||||
* NUL if whole string is legal).
|
||||
*/
|
||||
const char *
|
||||
skip_varname(const char *s, int aok)
|
||||
@ -1240,7 +1295,7 @@ arraysearch(struct tbl *vp, uint32_t val)
|
||||
struct tbl *prev, *curr, *new;
|
||||
size_t len;
|
||||
|
||||
vp->flag |= ARRAY|DEFINED;
|
||||
vp->flag = (vp->flag | (ARRAY|DEFINED)) & ~ASSOC;
|
||||
/* The table entry is always [0] */
|
||||
if (val == 0)
|
||||
return (vp);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user