JehanneOS/mksh
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make cat an mksh builtin, for things like here documents

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if any options are given, the external programme is invoked instead
This commit is contained in:
tg
2010-08-28 17:21:46 +00:00
parent 297e2ced89
commit d09fd67299
5 changed files with 120 additions and 12 deletions
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17
exec.c
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@ -22,7 +22,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.77 2010/08/28 15:48:18 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.78 2010/08/28 17:21:43 tg Exp $");
#ifndef MKSH_DEFAULT_EXECSHELL
#define MKSH_DEFAULT_EXECSHELL "/bin/sh"
@ -489,6 +489,21 @@ comexec(struct op *t, struct tbl *volatile tp, const char **ap,
subst_exstat = 0;
break;
}
} else if (tp->val.f == c_cat) {
/*
* if we have any flags, do not use the builtin
* in theory, we could allow -u, but that would
* mean to use ksh_getopt here and possibly ad-
* ded complexity and more code and isn't worth
*/
if (ap[1] && ap[1][0] == '-' && ap[1][1] != '\0' &&
/* argument, begins with -, is not - or -- */
(ap[1][1] != '-' || ap[1][2] != '\0'))
/* don't look for builtins or functions */
fcflags = FC_PATH;
else
/* go on, use the builtin */
break;
} else
break;
tp = findcom(ap[0], fcflags & (FC_BI|FC_FUNC));