diff --git a/copyparty/httpcli.py b/copyparty/httpcli.py
index 98a259a8..1df0be1e 100644
--- a/copyparty/httpcli.py
+++ b/copyparty/httpcli.py
@@ -3954,7 +3954,7 @@ class HttpCli(object):
                 if k == "uhash":
                     uhash = v
                     continue
-                uparams.append(k if v is "" else "%s=%s" % (k, v))
+                uparams.append(k if v == "" else "%s=%s" % (k, v))
         if uparams:
             url += "?" + "&".join(uparams)
         if uhash:
diff --git a/scripts/make-sfx.sh b/scripts/make-sfx.sh
index 5b9e117d..4f341e6c 100755
--- a/scripts/make-sfx.sh
+++ b/scripts/make-sfx.sh
@@ -146,6 +146,13 @@ ised() {
 	sed -r "$1" <"$2" >t
 	tmv "$2"
 }
+dlf() {
+	[ -s "$f" ] && return 0
+	wget -O "$f" "$1" && return 0
+	curl -L "$1" >"$f" && return 0
+	rm -f "$f"
+	exit 1
+}
 
 stamp=$(
 	for d in copyparty scripts; do
@@ -178,8 +185,7 @@ necho() {
 	necho collecting ipaddress
 	f="../build/ipaddress-1.0.23.tar.gz"
 	[ -e "$f" ] ||
-		(url=https://files.pythonhosted.org/packages/b9/9a/3e9da40ea28b8210dd6504d3fe9fe7e013b62bf45902b458d1cdc3c34ed9/ipaddress-1.0.23.tar.gz;
-		wget -O$f "$url" || curl -L "$url" >$f)
+		dlf https://files.pythonhosted.org/packages/b9/9a/3e9da40ea28b8210dd6504d3fe9fe7e013b62bf45902b458d1cdc3c34ed9/ipaddress-1.0.23.tar.gz
 
 	tar -zxf $f
 	mkdir py37
@@ -189,8 +195,7 @@ necho() {
 	necho collecting jinja2
 	f="../build/Jinja2-2.11.3.tar.gz"
 	[ -e "$f" ] ||
-		(url=https://files.pythonhosted.org/packages/4f/e7/65300e6b32e69768ded990494809106f87da1d436418d5f1367ed3966fd7/Jinja2-2.11.3.tar.gz;
-		wget -O$f "$url" || curl -L "$url" >$f)
+		dlf https://files.pythonhosted.org/packages/4f/e7/65300e6b32e69768ded990494809106f87da1d436418d5f1367ed3966fd7/Jinja2-2.11.3.tar.gz
 
 	tar -zxf $f
 	mv Jinja2-*/src/jinja2 .
@@ -199,8 +204,7 @@ necho() {
 	necho collecting markupsafe
 	f="../build/MarkupSafe-1.1.1.tar.gz"
 	[ -e "$f" ] ||
-		(url=https://files.pythonhosted.org/packages/b9/2e/64db92e53b86efccfaea71321f597fa2e1b2bd3853d8ce658568f7a13094/MarkupSafe-1.1.1.tar.gz;
-		wget -O$f "$url" || curl -L "$url" >$f)
+		dlf https://files.pythonhosted.org/packages/b9/2e/64db92e53b86efccfaea71321f597fa2e1b2bd3853d8ce658568f7a13094/MarkupSafe-1.1.1.tar.gz
 
 	tar -zxf $f
 	mv MarkupSafe-*/src/markupsafe .
@@ -212,8 +216,7 @@ necho() {
 	necho collecting pyftpdlib
 	f="../build/pyftpdlib-1.5.10.tar.gz"
 	[ -e "$f" ] ||
-		(url=https://files.pythonhosted.org/packages/cf/31/8d910cf40317dd0db74ba0b8558d0dee23c8b002468c14d3a5dec0e6e9fd/pyftpdlib-1.5.10.tar.gz;
-		wget -O$f "$url" || curl -L "$url" >$f)
+		dlf https://files.pythonhosted.org/packages/cf/31/8d910cf40317dd0db74ba0b8558d0dee23c8b002468c14d3a5dec0e6e9fd/pyftpdlib-1.5.10.tar.gz
 
 	tar -zxf $f
 	mv pyftpdlib-*/pyftpdlib .
@@ -229,8 +232,7 @@ necho() {
 	necho collecting partftpy
 	f="../build/partftpy-0.4.0.tar.gz"
 	[ -e "$f" ] ||
-		(url=https://files.pythonhosted.org/packages/8c/96/642bb3ddcb07a2c6764eb29aa562d1cf56877ad6c330c3c8921a5f05606d/partftpy-0.4.0.tar.gz;
-		wget -O$f "$url" || curl -L "$url" >$f)
+		dlf https://files.pythonhosted.org/packages/8c/96/642bb3ddcb07a2c6764eb29aa562d1cf56877ad6c330c3c8921a5f05606d/partftpy-0.4.0.tar.gz
 
 	tar -zxf $f
 	mv partftpy-*/partftpy .
@@ -240,8 +242,7 @@ necho() {
 	v=0.4.27
 	f="../build/python-magic-$v.tar.gz"
 	[ -e "$f" ] ||
-		(url=https://files.pythonhosted.org/packages/da/db/0b3e28ac047452d079d375ec6798bf76a036a08182dbb39ed38116a49130/python-magic-0.4.27.tar.gz;
-		wget -O$f "$url" || curl -L "$url" >$f)
+		dlf https://files.pythonhosted.org/packages/da/db/0b3e28ac047452d079d375ec6798bf76a036a08182dbb39ed38116a49130/python-magic-0.4.27.tar.gz
 
 	tar -zxf $f
 	mkdir magic
@@ -256,8 +257,7 @@ necho() {
 		necho collecting strip-hints
 		f=../build/strip-hints-0.1.10.tar.gz
 		[ -e $f ] ||
-			(url=https://files.pythonhosted.org/packages/9c/d4/312ddce71ee10f7e0ab762afc027e07a918f1c0e1be5b0069db5b0e7542d/strip-hints-0.1.10.tar.gz;
-			wget -O$f "$url" || curl -L "$url" >$f)
+			dlf https://files.pythonhosted.org/packages/9c/d4/312ddce71ee10f7e0ab762afc027e07a918f1c0e1be5b0069db5b0e7542d/strip-hints-0.1.10.tar.gz
 
 		tar -zxf $f
 		mv strip-hints-0.1.10/src/strip_hints .
@@ -315,7 +315,7 @@ necho() {
 [ ! -e copyparty/web/deps/mini-fa.woff ] && [ $dl_wd ] && {
 	echo "could not find webdeps; downloading..."
 	url=https://github.com/9001/copyparty/releases/latest/download/copyparty-sfx.py
-	wget -Ox.py "$url" || curl -L "$url" >x.py
+	f=x.py; rm -f $f; dlf $url
 
 	echo "extracting webdeps..."
 	wdsrc="$("$pybin" x.py --version 2>&1 | tee /dev/stderr | awk '/sfxdir:/{sub(/.*: /,"");print;exit}')"
diff --git a/scripts/tlcheck.sh b/scripts/tlcheck.sh
index cece6639..736c4bd5 100755
--- a/scripts/tlcheck.sh
+++ b/scripts/tlcheck.sh
@@ -22,8 +22,12 @@ awk -v apos=\' -v quot=\" '
     !$0 && t!=tp {
         print "\n\033[1;37;41m====DIFF===="
     }
+    !$0 && s==sp {
+        print "\n\033[1;37;44m====IDENTICAL===="
+    }
     !$0 { print; next; }
     {
+        sp=s; s=$0;
         tp=t; t="";
         c(quot);
         c(apos);