18 files changed, 1 insertions, 21 deletions
diff --git a/src/cmd/factotum/mkfile b/src/cmd/factotum/mkfile
index 3aa9bb70..7fb7ffde 100644
--- a/src/cmd/factotum/mkfile
+++ b/src/cmd/factotum/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=factotum
diff --git a/src/cmd/graph/graph.c b/src/cmd/graph/graph.c
index d1b6938f..7f41dfab 100644
--- a/src/cmd/graph/graph.c
+++ b/src/cmd/graph/graph.c
@@ -244,11 +244,6 @@ void limread(struct xy *p, int *argcp, char ***argvp){
 }
 
 int
-isdigit(char c){
-	return '0'<=c && c<='9';
-}
-
-int
 numb(float *np, int *argcp, char ***argvp){
 	char c;
 
diff --git a/src/cmd/graph/mkfile b/src/cmd/graph/mkfile
index 4a45add1..13447d0a 100644
--- a/src/cmd/graph/mkfile
+++ b/src/cmd/graph/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=graph
diff --git a/src/cmd/grep/mkfile b/src/cmd/grep/mkfile
index fd17abdd..38619325 100644
--- a/src/cmd/grep/mkfile
+++ b/src/cmd/grep/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 # Calling this grep breaks a LOT.  Like egrep on Linux.
diff --git a/src/cmd/gzip/mkfile b/src/cmd/gzip/mkfile
index 29b8bdb0..2894f1fb 100644
--- a/src/cmd/gzip/mkfile
+++ b/src/cmd/gzip/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 HFILES=\
diff --git a/src/cmd/hoc/mkfile b/src/cmd/hoc/mkfile
index d3bfd274..dd43b0fb 100644
--- a/src/cmd/hoc/mkfile
+++ b/src/cmd/hoc/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=hoc
diff --git a/src/cmd/mk/mkfile b/src/cmd/mk/mkfile
index 9b054053..6e8f52b9 100644
--- a/src/cmd/mk/mkfile
+++ b/src/cmd/mk/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=mk
diff --git a/src/cmd/plot/libplot/mkfile b/src/cmd/plot/libplot/mkfile
index a73bd617..dc33ac63 100644
--- a/src/cmd/plot/libplot/mkfile
+++ b/src/cmd/plot/libplot/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../../..
 <$PLAN9/src/mkhdr
 
 LIB=../libplot.a
diff --git a/src/cmd/plot/libplot/subr.c b/src/cmd/plot/libplot/subr.c
index cf4cf89e..886659fa 100644
--- a/src/cmd/plot/libplot/subr.c
+++ b/src/cmd/plot/libplot/subr.c
@@ -11,6 +11,7 @@ struct penvir  E[9] = {
 { 0., 1024., 0., 0., 1., -1.,1024., -1024., 0., 0., pSMALL, 1., 1, 0.,1, DBlack, DWhite}
 };
 struct penvir *e0 = E, *e1 = &E[1], *esave;
+int
 bcolor(char *s){
 	int c;
 	while (*s != NULL) {
diff --git a/src/cmd/plot/mkfile b/src/cmd/plot/mkfile
index 0eb1a795..77ebd7e1 100644
--- a/src/cmd/plot/mkfile
+++ b/src/cmd/plot/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=plot
diff --git a/src/cmd/plumb/mkfile b/src/cmd/plumb/mkfile
index 967cbb3b..902ebf01 100644
--- a/src/cmd/plumb/mkfile
+++ b/src/cmd/plumb/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=plumber plumb
diff --git a/src/cmd/rc/mkfile b/src/cmd/rc/mkfile
index c1440ce4..f7d50e3f 100644
--- a/src/cmd/rc/mkfile
+++ b/src/cmd/rc/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 YACC=yacc -d
 
diff --git a/src/cmd/rio/mkfile b/src/cmd/rio/mkfile
index b5e8b110..1bec50ef 100644
--- a/src/cmd/rio/mkfile
+++ b/src/cmd/rio/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 OFILES=\
diff --git a/src/cmd/sam/mkfile b/src/cmd/sam/mkfile
index aa9a59f4..8402579d 100644
--- a/src/cmd/sam/mkfile
+++ b/src/cmd/sam/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=sam
diff --git a/src/cmd/samterm/mkfile b/src/cmd/samterm/mkfile
index facc78d2..78454909 100644
--- a/src/cmd/samterm/mkfile
+++ b/src/cmd/samterm/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=samterm
diff --git a/src/cmd/spell/mkfile b/src/cmd/spell/mkfile
index e9e600f9..b92c125f 100644
--- a/src/cmd/spell/mkfile
+++ b/src/cmd/spell/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 TARG=sprog
diff --git a/src/cmd/vac/mkfile b/src/cmd/vac/mkfile
index a4b7a298..ed464d05 100644
--- a/src/cmd/vac/mkfile
+++ b/src/cmd/vac/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 LIBFILES=\
diff --git a/src/cmd/venti/mkfile b/src/cmd/venti/mkfile
index 99d8c98f..bb31f50a 100644
--- a/src/cmd/venti/mkfile
+++ b/src/cmd/venti/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../../..
 <$PLAN9/src/mkhdr
 
 LIBOFILES=\