4 files changed, 29 insertions, 12 deletions

diff --git a/bin/sh/eval.c b/bin/sh/eval.c
index b19c24f81a91..a50c53fdcb90 100644
--- a/bin/sh/eval.c
+++ b/bin/sh/eval.c
@@ -714,15 +714,9 @@ evalcommand(union node *cmd, int flags, struct backcmd *backcmd)
 	oexitstatus = exitstatus;
 	exitstatus = 0;
 	for (argp = cmd->ncmd.args ; argp ; argp = argp->narg.next) {
-		char *p = argp->narg.text;
-		if (varflag && is_name(*p)) {
-			do {
-				p++;
-			} while (is_in_name(*p));
-			if (*p == '=') {
-				expandarg(argp, &varlist, EXP_VARTILDE);
-				continue;
-			}
+		if (varflag && isassignment(argp->narg.text)) {
+			expandarg(argp, &varlist, EXP_VARTILDE);
+			continue;
 		}
 		expandarg(argp, &arglist, EXP_FULL | EXP_TILDE);
 		varflag = 0;
diff --git a/bin/sh/parser.c b/bin/sh/parser.c
index 192769b076c4..151970b79d08 100644
--- a/bin/sh/parser.c
+++ b/bin/sh/parser.c
@@ -619,6 +619,7 @@ simplecmd(union node **rpp, union node *redir)
 	union node **orig_rpp = rpp;
 	union node *n = NULL;
 	int special;
+	int savecheckkwd;
 
 	/* If we don't have any redirections already, then we must reset */
 	/* rpp to be the address of the local redir variable.  */
@@ -634,7 +635,10 @@ simplecmd(union node **rpp, union node *redir)
 	 */
 	orig_rpp = rpp;
 
+	savecheckkwd = CHKALIAS;
+
 	for (;;) {
+		checkkwd = savecheckkwd;
 		if (readtoken() == TWORD) {
 			n = (union node *)stalloc(sizeof (struct narg));
 			n->type = NARG;
@@ -642,6 +646,8 @@ simplecmd(union node **rpp, union node *redir)
 			n->narg.backquote = backquotelist;
 			*app = n;
 			app = &n->narg.next;
+			if (savecheckkwd != 0 && !isassignment(wordtext))
+				savecheckkwd = 0;
 		} else if (lasttoken == TREDIR) {
 			*rpp = n = redirnode;
 			rpp = &n->nfile.next;
@@ -1859,6 +1865,22 @@ goodname(const char *name)
 }
 
 
+int
+isassignment(const char *p)
+{
+	if (!is_name(*p))
+		return 0;
+	p++;
+	for (;;) {
+		if (*p == '=')
+			return 1;
+		else if (!is_in_name(*p))
+			return 0;
+		p++;
+	}
+}
+
+
 /*
  * Called when an unexpected token is read during the parse.  The argument
  * is the token that is expected, or -1 if more than one type of token can
diff --git a/bin/sh/parser.h b/bin/sh/parser.h
index dfbda861e0c8..e213e2140617 100644
--- a/bin/sh/parser.h
+++ b/bin/sh/parser.h
@@ -80,4 +80,5 @@ extern const char *const parsekwd[];
 union node *parsecmd(int);
 void fixredir(union node *, const char *, int);
 int goodname(const char *);
+int isassignment(const char *);
 char *getprompt(void *);
diff --git a/bin/sh/sh.1 b/bin/sh/sh.1
index a74e67776d8c..42e55d391b3e 100644
--- a/bin/sh/sh.1
+++ b/bin/sh/sh.1
@@ -32,7 +32,7 @@
 .\"	from: @(#)sh.1	8.6 (Berkeley) 5/4/95
 .\" $FreeBSD$
 .\"
-.Dd May 20, 2011
+.Dd May 21, 2011
 .Dt SH 1
 .Os
 .Sh NAME
@@ -506,8 +506,8 @@ The following are keywords:
 An alias is a name and corresponding value set using the
 .Ic alias
 built-in command.
-Whenever a keyword may occur (see above),
-and after checking for keywords, the shell
+Wherever the command word of a simple command may occur,
+and after checking for keywords if a keyword may occur, the shell
 checks the word to see if it matches an alias.
 If it does, it replaces it in the input stream with its value.
 For example, if there is an alias called