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special-case another bizarre POSIX corner case

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after david korn agreed to change ksh93 to match
This commit is contained in:
tg
2011-03-26 16:11:43 +00:00
parent b1d97ea44e
commit 84f7055f8f
2 changed files with 33 additions and 6 deletions
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21
lex.c
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@ -22,7 +22,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.143 2011/03/26 15:32:37 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.144 2011/03/26 16:11:43 tg Exp $");
/*
* states while lexing word
@ -1634,13 +1634,12 @@ promptlen(const char *cp)
static char *
get_brace_var(XString *wsp, char *wp)
{
char c;
enum parse_state {
PS_INITIAL, PS_SAW_HASH, PS_IDENT,
PS_NUMBER, PS_VAR1
} state;
char c;
} state = PS_INITIAL;
state = PS_INITIAL;
while (/* CONSTCOND */ 1) {
c = getsc();
/* State machine to figure out where the variable part ends. */
@ -1656,7 +1655,19 @@ get_brace_var(XString *wsp, char *wp)
state = PS_IDENT;
else if (ksh_isdigit(c))
state = PS_NUMBER;
else if (ctype(c, C_VAR1))
else if (c == '#') {
if (state == PS_SAW_HASH) {
char c2;
c2 = getsc();
ungetsc(c2);
if (c2 != '}') {
ungetsc(c);
goto out;
}
}
state = PS_VAR1;
} else if (ctype(c, C_VAR1))
state = PS_VAR1;
else
goto out;