From f88078247635fd076c935af6413f75395d5159da Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 22 Mar 2018 17:32:55 +0800 Subject: expand: Fix bugs with words connected to the right of $@ On Sun, Mar 04, 2018 at 12:44:59PM +0100, Harald van Dijk wrote: > > command: set -- a ""; space=" "; printf "<%s>" "$@"$space > bash: <> > dash 0.5.8: < > > dash 0.5.9.1: < > > dash patched: <> This is actually composed of two bugs. First of all our tracking of quotemark is wrong so anything after "$@" becomes quoted. Once we fix that then the problem is that the first space character after "$@" is not recognised as an IFS. This patch fixes both. Signed-off-by: Herbert Xu --- src/expand.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/src/expand.c b/src/expand.c index 705fef7..ce9f982 100644 --- a/src/expand.c +++ b/src/expand.c @@ -318,13 +318,13 @@ start: case CTLENDVAR: /* ??? */ goto breakloop; case CTLQUOTEMARK: - inquotes ^= EXP_QUOTED; /* "$@" syntax adherence hack */ - if (inquotes && !memcmp(p, dolatstr + 1, - DOLATSTRLEN - 1)) { - p = evalvar(p + 1, flag | inquotes) + 1; + if (!inquotes && !memcmp(p, dolatstr + 1, + DOLATSTRLEN - 1)) { + p = evalvar(p + 1, flag | EXP_QUOTED) + 1; goto start; } + inquotes ^= EXP_QUOTED; addquote: if (flag & QUOTES_ESC) { p--; @@ -1032,7 +1032,10 @@ ifsbreakup(char *string, int maxargs, struct arglist *arglist) realifs = ifsset() ? ifsval() : defifs; ifsp = &ifsfirst; do { + int afternul; + p = string + ifsp->begoff; + afternul = nulonly; nulonly = ifsp->nulonly; ifs = nulonly ? nullstr : realifs; ifsspc = 0; @@ -1097,7 +1100,7 @@ ifsbreakup(char *string, int maxargs, struct arglist *arglist) } if (isifs) { - if (!nulonly) + if (!(afternul || nulonly)) ifsspc = isdefifs; /* Ignore IFS whitespace at start */ if (q == start && ifsspc) { -- cgit 1.4.1