diff --git a/cgit.c b/cgit.c
index 349d6e0..eb964ac 100644
--- a/cgit.c
+++ b/cgit.c
@@ -767,8 +767,11 @@ int main(int argc, const char **argv)
 	 * that virtual-root equals SCRIPT_NAME, minus any possibly
 	 * trailing slashes.
 	 */
-	if (!ctx.cfg.virtual_root)
+	if (!ctx.cfg.virtual_root && ctx.cfg.script_name) {
 		ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
+		if (!ctx.cfg.virtual_root)
+			ctx.cfg.virtual_root = "";
+        }
 
 	/* If no url parameter is specified on the querystring, lets
 	 * use PATH_INFO as url. This allows cgit to work with virtual
diff --git a/html.c b/html.c
index a60bc13..a0f6db4 100644
--- a/html.c
+++ b/html.c
@@ -18,7 +18,7 @@ static const char* url_escape_table[256] = {
 	"%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07", "%08", "%09",
 	"%0a", "%0b", "%0c", "%0d", "%0e", "%0f", "%10", "%11", "%12", "%13",
 	"%14", "%15", "%16", "%17", "%18", "%19", "%1a", "%1b", "%1c", "%1d",
-	"%1e", "%1f", "+", 0, "%22", "%23", 0, "%25", "%26", "%27", 0, 0, 0,
+	"%1e", "%1f", "%20", 0, "%22", "%23", 0, "%25", "%26", "%27", 0, 0, 0,
 	"%2b", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%3c", "%3d",
 	"%3e", "%3f", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, "%5c", 0, "%5e", 0, "%60", 0, 0, 0, 0, 0,
@@ -162,9 +162,9 @@ void html_url_path(const char *txt)
 	while(t && *t){
 		int c = *t;
 		const char *e = url_escape_table[c];
-		if (e && c!='+' && c!='&' && c!='+') {
+		if (e && c!='+' && c!='&') {
 			html_raw(txt, t - txt);
-			html_raw(e, 3);
+			html(e);
 			txt = t+1;
 		}
 		t++;
@@ -179,9 +179,11 @@ void html_url_arg(const char *txt)
 	while(t && *t){
 		int c = *t;
 		const char *e = url_escape_table[c];
+		if (c == ' ')
+			e = "+";
 		if (e) {
 			html_raw(txt, t - txt);
-			html_raw(e, strlen(e));
+			html(e);
 			txt = t+1;
 		}
 		t++;
@@ -288,12 +290,12 @@ char *convert_query_hexchar(char *txt)
 
 int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const char *value))
 {
-	char *t, *txt, *value = NULL, c;
+	char *o, *t, *txt, *value = NULL, c;
 
 	if (!txt_)
 		return 0;
 
-	t = txt = strdup(txt_);
+	o = t = txt = strdup(txt_);
 	if (t == NULL) {
 		printf("Out of memory\n");
 		exit(1);
@@ -316,5 +318,6 @@ int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const
 	}
 	if (t!=txt)
 		(*fn)(txt, value);
+	free(o);
 	return 0;
 }
diff --git a/parsing.c b/parsing.c
index c9e4350..151c0fe 100644
--- a/parsing.c
+++ b/parsing.c
@@ -103,7 +103,10 @@ const char *reencode(char **txt, const char *src_enc, const char *dst_enc)
 {
 	char *tmp;
 
-	if (!txt || !*txt || !src_enc || !dst_enc)
+	if (!txt)
+		return NULL;
+
+	if (!*txt || !src_enc || !dst_enc)
 		return *txt;
 
 	/* no encoding needed if src_enc equals dst_enc */
diff --git a/shared.c b/shared.c
index 7ec2e19..3778a5b 100644
--- a/shared.c
+++ b/shared.c
@@ -100,23 +100,15 @@ void *cgit_free_commitinfo(struct commitinfo *info)
 char *trim_end(const char *str, char c)
 {
 	int len;
-	char *s, *t;
 
 	if (str == NULL)
 		return NULL;
-	t = (char *)str;
-	len = strlen(t);
-	while(len > 0 && t[len - 1] == c)
+	len = strlen(str);
+	while(len > 0 && str[len - 1] == c)
 		len--;
-
 	if (len == 0)
 		return NULL;
-
-	c = t[len];
-	t[len] = '\0';
-	s = xstrdup(t);
-	t[len] = c;
-	return s;
+	return xstrndup(str, len);
 }
 
 char *strlpart(char *txt, int maxlen)
@@ -311,7 +303,6 @@ void cgit_diff_tree(const unsigned char *old_sha1,
 		    filepair_fn fn, const char *prefix, int ignorews)
 {
 	struct diff_options opt;
-	int ret;
 	int prefixlen;
 
 	diff_setup(&opt);
@@ -332,9 +323,9 @@ void cgit_diff_tree(const unsigned char *old_sha1,
 	diff_setup_done(&opt);
 
 	if (old_sha1 && !is_null_sha1(old_sha1))
-		ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
+		diff_tree_sha1(old_sha1, new_sha1, "", &opt);
 	else
-		ret = diff_root_tree_sha1(new_sha1, "", &opt);
+		diff_root_tree_sha1(new_sha1, "", &opt);
 	diffcore_std(&opt);
 	diff_flush(&opt);
 }
diff --git a/tests/setup.sh b/tests/setup.sh
index 30f90d5..b2f1169 100755
--- a/tests/setup.sh
+++ b/tests/setup.sh
@@ -20,10 +20,10 @@ mkrepo() {
 	name=$1
 	count=$2
 	dir=$PWD
-	test -d $name && return
+	test -d "$name" && return
 	printf "Creating testrepo %s\n" $name
-	mkdir -p $name
-	cd $name
+	mkdir -p "$name"
+	cd "$name"
 	git init
 	n=1
 	while test $n -le $count
@@ -50,6 +50,7 @@ setup_repos()
 	mkrepo trash/repos/foo 5 >/dev/null
 	mkrepo trash/repos/bar 50 >/dev/null
 	mkrepo trash/repos/foo+bar 10 testplus >/dev/null
+	mkrepo "trash/repos/with space" 2 >/dev/null
 	cat >trash/cgitrc <<EOF
 virtual-root=/
 cache-root=$PWD/trash/cache
@@ -75,6 +76,10 @@ repo.desc=the bar repo
 repo.url=foo+bar
 repo.path=$PWD/trash/repos/foo+bar/.git
 repo.desc=the foo+bar repo
+
+repo.url=with space
+repo.path=$PWD/trash/repos/with space/.git
+repo.desc=spaced repo
 EOF
 }
 
@@ -101,6 +106,12 @@ tests_done()
 
 run_test()
 {
+	bug=0
+	if test "$1" = "BUG"
+	then
+		bug=1
+		shift
+	fi
 	desc=$1
 	script=$2
 	test_count=$(expr $test_count + 1)
@@ -109,9 +120,15 @@ run_test()
 	eval "$2" >>test-output.log 2>>test-output.log
 	res=$?
 	printf "test %d: exitcode=%d\n" $test_count $res >>test-output.log
-	if test $res = 0
+	if test $res = 0 -a $bug = 0
 	then
 		printf " %2d) %-60s [ok]\n" $test_count "$desc"
+	elif test $res = 0 -a $bug = 1
+	then
+		printf " %2d) %-60s [BUG FIXED]\n" $test_count "$desc"
+	elif test $bug = 1
+	then
+		printf " %2d) %-60s [KNOWN BUG]\n" $test_count "$desc"
 	else
 		test_failed=$(expr $test_failed + 1)
 		printf " %2d) %-60s [failed]\n" $test_count "$desc"
diff --git a/tests/t0101-index.sh b/tests/t0101-index.sh
index 07e39f9..573a351 100755
--- a/tests/t0101-index.sh
+++ b/tests/t0101-index.sh
@@ -11,6 +11,7 @@ run_test 'find bar repo' 'grep -e "bar" trash/tmp'
 run_test 'find bar description' 'grep -e "the bar repo" trash/tmp'
 run_test 'find foo+bar repo' 'grep -e ">foo+bar<" trash/tmp'
 run_test 'verify foo+bar link' 'grep -e "/foo+bar/" trash/tmp'
+run_test 'verify "with%20space" link' 'grep -e "/with%20space/" trash/tmp'
 run_test 'no tree-link' '! grep -e "foo/tree" trash/tmp'
 run_test 'no log-link' '! grep -e "foo/log" trash/tmp'
 
diff --git a/tests/t0103-log.sh b/tests/t0103-log.sh
index b08cd29..def5c18 100755
--- a/tests/t0103-log.sh
+++ b/tests/t0103-log.sh
@@ -12,4 +12,14 @@ run_test 'generate bar/log' 'cgit_url "bar/log" >trash/tmp'
 run_test 'find commit 1' 'grep -e "commit 1" trash/tmp'
 run_test 'find commit 50' 'grep -e "commit 50" trash/tmp'
 
+run_test 'generate "with%20space/log?qt=grep&q=commit+1"' '
+	cgit_url "with+space/log&qt=grep&q=commit+1" >trash/tmp
+'
+run_test 'find commit 1' 'grep -e "commit 1" trash/tmp'
+run_test 'find link with %20 in path' 'grep -e "/with%20space/log/?qt=grep" trash/tmp'
+run_test 'find link with + in arg' 'grep -e "/log/?qt=grep&q=commit+1" trash/tmp'
+run_test BUG 'no links with space in path' '! grep -e "href=./with space/" trash/tmp'
+run_test 'no links with space in arg' '! grep -e "q=commit 1" trash/tmp'
+run_test 'commit 2 is not visible' '! grep -e "commit 2" trash/tmp'
+
 tests_done
diff --git a/ui-diff.c b/ui-diff.c
index a7bc667..d21541b 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -345,8 +345,10 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefi
 		return;
 	}
 	commit = lookup_commit_reference(new_rev_sha1);
-	if (!commit || parse_commit(commit))
+	if (!commit || parse_commit(commit)) {
 		cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1)));
+		return;
+	}
 
 	if (old_rev)
 		get_sha1(old_rev, old_rev_sha1);
@@ -362,8 +364,10 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefi
 			return;
 		}
 		commit2 = lookup_commit_reference(old_rev_sha1);
-		if (!commit2 || parse_commit(commit2))
+		if (!commit2 || parse_commit(commit2)) {
 			cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(old_rev_sha1)));
+			return;
+		}
 	}
 
 	if ((ctx.qry.ssdiff && !ctx.cfg.ssdiff) || (!ctx.qry.ssdiff && ctx.cfg.ssdiff))
diff --git a/ui-repolist.c b/ui-repolist.c
index 2c98668..e138f59 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -20,7 +20,7 @@ time_t read_agefile(char *path)
 	if (readfile(path, &buf, &size))
 		return -1;
 
-	if (parse_date(buf, buf2, sizeof(buf2)))
+	if (parse_date(buf, buf2, sizeof(buf2)) > 0)
 		result = strtoul(buf2, NULL, 10);
 	else
 		result = 0;