log CHANGE message improvements
diff --git a/tests/utests/data/test_validation.c b/tests/utests/data/test_validation.c
index af2459d..c582399 100644
--- a/tests/utests/data/test_validation.c
+++ b/tests/utests/data/test_validation.c
@@ -57,7 +57,7 @@
     UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
 
     CHECK_PARSE_LYD_PARAM("<c xmlns=\"urn:tests:a\">hey</c>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("When condition \"/cont/b = 'val_b'\" not satisfied.", "Schema location /a:c, data location /a:c.");
+    CHECK_LOG_CTX("When condition \"/cont/b = 'val_b'\" not satisfied.", "Schema location \"/a:c\", data location \"/a:c\".");
 
     LYD_TREE_CREATE("<cont xmlns=\"urn:tests:a\"><b>val_b</b></cont><c xmlns=\"urn:tests:a\">hey</c>", tree);
     CHECK_LYSC_NODE(tree->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c", 0, LYS_LEAF, 0, 0, NULL, 1);
@@ -105,10 +105,10 @@
     UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
 
     CHECK_PARSE_LYD_PARAM("<d xmlns=\"urn:tests:a\">hey</d>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("When condition \"../c = 'val_c'\" not satisfied.", "Schema location /a:d, data location /a:d.");
+    CHECK_LOG_CTX("When condition \"../c = 'val_c'\" not satisfied.", "Schema location \"/a:d\", data location \"/a:d\".");
 
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:a\"><b>hey</b></cont>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("When condition \"../a = 'val_a'\" not satisfied.", "Schema location /a:cont/b, data location /a:cont/b.");
+    CHECK_LOG_CTX("When condition \"../a = 'val_a'\" not satisfied.", "Schema location \"/a:cont/b\", data location \"/a:cont/b\".");
 
     LYD_TREE_CREATE("<c xmlns=\"urn:tests:a\">val_c</c><d xmlns=\"urn:tests:a\">hey</d>", tree);
     CHECK_LYSC_NODE(tree->next->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_MAND_TRUE, 1, "d", 0, LYS_LEAF, 0, 0, NULL, 1);
@@ -154,13 +154,13 @@
     UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
 
     CHECK_PARSE_LYD_PARAM("<d xmlns=\"urn:tests:b\"/>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX_APPTAG("Mandatory choice \"choic\" data do not exist.", "Schema location /b:choic.", "missing-choice");
+    CHECK_LOG_CTX_APPTAG("Mandatory choice \"choic\" data do not exist.", "Schema location \"/b:choic\".", "missing-choice");
 
     CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:b\">string</l><d xmlns=\"urn:tests:b\"/>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Mandatory node \"c\" instance does not exist.", "Schema location /b:c.");
+    CHECK_LOG_CTX("Mandatory node \"c\" instance does not exist.", "Schema location \"/b:c\".");
 
     CHECK_PARSE_LYD_PARAM("<a xmlns=\"urn:tests:b\">string</a>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Mandatory node \"c\" instance does not exist.", "Schema location /b:c.");
+    CHECK_LOG_CTX("Mandatory node \"c\" instance does not exist.", "Schema location \"/b:c\".");
 
     LYD_TREE_CREATE("<a xmlns=\"urn:tests:b\">string</a><c xmlns=\"urn:tests:b\">string2</c>", tree);
     lyd_free_siblings(tree);
@@ -204,12 +204,12 @@
     CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:c\">mate</l>"
             "<d xmlns=\"urn:tests:c\"/>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX_APPTAG("Too few \"l\" instances.", "Schema location /c:choic/b/l.", "too-few-elements");
+    CHECK_LOG_CTX_APPTAG("Too few \"l\" instances.", "Schema location \"/c:choic/b/l\".", "too-few-elements");
 
     CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:c\">val1</l>"
             "<l xmlns=\"urn:tests:c\">val2</l>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX_APPTAG("Too few \"l\" instances.", "Schema location /c:choic/b/l.", "too-few-elements");
+    CHECK_LOG_CTX_APPTAG("Too few \"l\" instances.", "Schema location \"/c:choic/b/l\".", "too-few-elements");
 
     LYD_TREE_CREATE("<l xmlns=\"urn:tests:c\">val1</l>"
             "<l xmlns=\"urn:tests:c\">val2</l>"
@@ -225,7 +225,7 @@
             "<lt xmlns=\"urn:tests:c\"><k>val4</k></lt>"
             "<lt xmlns=\"urn:tests:c\"><k>val5</k></lt>"
             "<lt xmlns=\"urn:tests:c\"><k>val6</k></lt>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX_APPTAG("Too many \"lt\" instances.", "Schema location /c:lt, data location /c:lt[k='val5'].",
+    CHECK_LOG_CTX_APPTAG("Too many \"lt\" instances.", "Schema location \"/c:lt\", data location \"/c:lt[k='val5']\".",
             "too-many-elements");
 }
 
@@ -314,7 +314,7 @@
             "    <l1>same</l1>\n"
             "</lt>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
     CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"l1\" not satisfied in \"/d:lt[k='val1']\" and \"/d:lt[k='val2']\".",
-            "Schema location /d:lt, data location /d:lt[k='val2'].", "data-not-unique");
+            "Schema location \"/d:lt\", data location \"/d:lt[k='val2']\".", "data-not-unique");
 
     /* now try with more instances */
     LYD_TREE_CREATE("<lt xmlns=\"urn:tests:d\">\n"
@@ -412,7 +412,7 @@
             "    <l1>8</l1>\n"
             "</lt>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
     CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"l1\" not satisfied in \"/d:lt[k='val7']\" and \"/d:lt[k='val2']\".",
-            "Schema location /d:lt, data location /d:lt[k='val2'].", "data-not-unique");
+            "Schema location \"/d:lt\", data location \"/d:lt[k='val2']\".", "data-not-unique");
 }
 
 static void
@@ -538,7 +538,7 @@
             "</lt2>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
     CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"l3\" not satisfied in \"/d:lt2[k='val2']/lt3[kk='val3']\" and "
             "\"/d:lt2[k='val2']/lt3[kk='val1']\".",
-            "Schema location /d:lt2/lt3, data location /d:lt2[k='val2']/lt3[kk='val1'].", "data-not-unique");
+            "Schema location \"/d:lt2/lt3\", data location \"/d:lt2[k='val2']/lt3[kk='val1']\".", "data-not-unique");
 
     CHECK_PARSE_LYD_PARAM("<lt2 xmlns=\"urn:tests:d\">\n"
             "    <k>val1</k>\n"
@@ -576,7 +576,7 @@
             "    <l4>5</l4>\n"
             "</lt2>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
     CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"cont/l2 l4\" not satisfied in \"/d:lt2[k='val4']\" and \"/d:lt2[k='val2']\".",
-            "Schema location /d:lt2, data location /d:lt2[k='val2'].", "data-not-unique");
+            "Schema location \"/d:lt2\", data location \"/d:lt2[k='val2']\".", "data-not-unique");
 
     CHECK_PARSE_LYD_PARAM("<lt2 xmlns=\"urn:tests:d\">\n"
             "    <k>val1</k>\n"
@@ -622,7 +622,7 @@
             "    <l6>3</l6>\n"
             "</lt2>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
     CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"l5 l6\" not satisfied in \"/d:lt2[k='val5']\" and \"/d:lt2[k='val3']\".",
-            "Schema location /d:lt2, data location /d:lt2[k='val3'].", "data-not-unique");
+            "Schema location \"/d:lt2\", data location \"/d:lt2[k='val3']\".", "data-not-unique");
 }
 
 static void
@@ -683,28 +683,28 @@
 
     CHECK_PARSE_LYD_PARAM("<d xmlns=\"urn:tests:e\">25</d><d xmlns=\"urn:tests:e\">50</d>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Duplicate instance of \"d\".", "Schema location /e:d, data location /e:d.");
+    CHECK_LOG_CTX("Duplicate instance of \"d\".", "Schema location \"/e:d\", data location \"/e:d\".");
 
     CHECK_PARSE_LYD_PARAM("<lt xmlns=\"urn:tests:e\"><k>A</k></lt>"
             "<lt xmlns=\"urn:tests:e\"><k>B</k></lt>"
             "<lt xmlns=\"urn:tests:e\"><k>A</k></lt>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Duplicate instance of \"lt\".", "Schema location /e:lt, data location /e:lt[k='A'].");
+    CHECK_LOG_CTX("Duplicate instance of \"lt\".", "Schema location \"/e:lt\", data location \"/e:lt[k='A']\".");
 
     CHECK_PARSE_LYD_PARAM("<ll xmlns=\"urn:tests:e\">A</ll>"
             "<ll xmlns=\"urn:tests:e\">B</ll>"
             "<ll xmlns=\"urn:tests:e\">B</ll>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Duplicate instance of \"ll\".", "Schema location /e:ll, data location /e:ll[.='B'].");
+    CHECK_LOG_CTX("Duplicate instance of \"ll\".", "Schema location \"/e:ll\", data location \"/e:ll[.='B']\".");
 
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:e\"></cont><cont xmlns=\"urn:tests:e\"/>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Duplicate instance of \"cont\".", "Schema location /e:cont, data location /e:cont.");
+    CHECK_LOG_CTX("Duplicate instance of \"cont\".", "Schema location \"/e:cont\", data location \"/e:cont\".");
 
     /* same tests again but using hashes */
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:e\"><d>25</d><d>50</d><ll>1</ll><ll>2</ll><ll>3</ll><ll>4</ll></cont>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Duplicate instance of \"d\".", "Schema location /e:cont/d, data location /e:cont/d, line number 1.");
+    CHECK_LOG_CTX("Duplicate instance of \"d\".", "Schema location \"/e:cont/d\", data location \"/e:cont/d\", line number 1.");
 
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:e\"><ll>1</ll><ll>2</ll><ll>3</ll><ll>4</ll>"
             "<lt><k>a</k></lt>"
@@ -713,12 +713,12 @@
             "<lt><k>d</k></lt>"
             "<lt><k>c</k></lt></cont>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Duplicate instance of \"lt\".", "Schema location /e:cont/lt, data location /e:cont/lt[k='c'], line number 1.");
+    CHECK_LOG_CTX("Duplicate instance of \"lt\".", "Schema location \"/e:cont/lt\", data location \"/e:cont/lt[k='c']\", line number 1.");
 
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:e\"><ll>1</ll><ll>2</ll><ll>3</ll><ll>4</ll>"
             "<ll>a</ll><ll>b</ll><ll>c</ll><ll>d</ll><ll>d</ll></cont>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Duplicate instance of \"ll\".", "Schema location /e:cont/ll, data location /e:cont/ll[.='d'], line number 1.");
+    CHECK_LOG_CTX("Duplicate instance of \"ll\".", "Schema location \"/e:cont/ll\", data location \"/e:cont/ll[.='d']\", line number 1.");
 
     /* cases */
     CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:e\">a</l>"
@@ -726,13 +726,13 @@
             "<l xmlns=\"urn:tests:e\">c</l>"
             "<l xmlns=\"urn:tests:e\">b</l>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Duplicate instance of \"l\".", "Schema location /e:choic/b/l, data location /e:l[.='b'].");
+    CHECK_LOG_CTX("Duplicate instance of \"l\".", "Schema location \"/e:choic/b/l\", data location \"/e:l[.='b']\".");
 
     CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:e\">a</l><l xmlns=\"urn:tests:e\">b</l>"
             "<l xmlns=\"urn:tests:e\">c</l>"
             "<a xmlns=\"urn:tests:e\">aa</a>",
             LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX("Data for both cases \"a\" and \"b\" exist.", "Schema location /e:choic.");
+    CHECK_LOG_CTX("Data for both cases \"a\" and \"b\" exist.", "Schema location \"/e:choic\".");
 }
 
 static void
@@ -1053,12 +1053,12 @@
             "</cont>\n";
     CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_NO_STATE, 0, LY_EVALID, tree);
     CHECK_LOG_CTX("Unexpected data state node \"cont2\" found.",
-            "Schema location /h:cont/cont2, data location /h:cont, line number 3.");
+            "Schema location \"/h:cont/cont2\", data location \"/h:cont\", line number 3.");
 
     CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, tree);
     assert_int_equal(LY_EVALID, lyd_validate_all(&tree, NULL, LYD_VALIDATE_PRESENT | LYD_VALIDATE_NO_STATE, NULL));
     CHECK_LOG_CTX("Unexpected data state node \"cont2\" found.",
-            "Schema location /h:cont/cont2, data location /h:cont/cont2.");
+            "Schema location \"/h:cont/cont2\", data location \"/h:cont/cont2\".");
     lyd_free_all(tree);
 }
 
@@ -1097,7 +1097,7 @@
             "  <l2>val</l2>\n"
             "</cont>\n", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
     CHECK_LOG_CTX_APPTAG("Must condition \"../l = 'right'\" not satisfied.",
-            "Schema location /i:cont/l2, data location /i:cont/l2.", "must-violation");
+            "Schema location \"/i:cont/l2\", data location \"/i:cont/l2\".", "must-violation");
 
     LYD_TREE_CREATE("<cont xmlns=\"urn:tests:i\">\n"
             "  <l>right</l>\n"
@@ -1109,7 +1109,7 @@
             "  <l>wrong</l>\n"
             "  <l3>val</l3>\n"
             "</cont>\n", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
-    CHECK_LOG_CTX_APPTAG("l leaf is not left", "Schema location /i:cont/l3, data location /i:cont/l3.", "not-left");
+    CHECK_LOG_CTX_APPTAG("l leaf is not left", "Schema location \"/i:cont/l3\", data location \"/i:cont/l3\".", "not-left");
 }
 
 const char *schema_j =
@@ -1186,7 +1186,7 @@
     /* missing leafref */
     assert_int_equal(LY_EVALID, lyd_validate_op(op_tree, NULL, LYD_TYPE_RPC_YANG, NULL));
     CHECK_LOG_CTX("Invalid leafref value \"target\" - no existing target instance \"/lf3\".",
-            "Schema location /j:cont/l1/act/input/lf2, data location /j:cont/l1[k='val1']/act/lf2.");
+            "Schema location \"/j:cont/l1/act/input/lf2\", data location \"/j:cont/l1[k='val1']/act/lf2\".");
     ly_in_free(in, 0);
 
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:j\">\n"
@@ -1198,7 +1198,7 @@
     /* input must false */
     assert_int_equal(LY_EVALID, lyd_validate_op(op_tree, tree, LYD_TYPE_RPC_YANG, NULL));
     CHECK_LOG_CTX("Must condition \"../../lf1 = 'true'\" not satisfied.",
-            "Data location /j:cont/l1[k='val1']/act.");
+            "Data location \"/j:cont/l1[k='val1']/act\".");
 
     lyd_free_all(tree);
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:j\">\n"
@@ -1251,7 +1251,7 @@
     assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
     assert_int_equal(LY_EVALID, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &tree, NULL));
     CHECK_LOG_CTX("Unsatisfied length - string \"123\" length is not allowed.", "Schema location "
-            "/val-str:modify-user-password/input/new-password, data location /val-str:modify-user-password, line number 3.");
+            "\"/val-str:modify-user-password/input/new-password\", data location \"/val-str:modify-user-password\", line number 3.");
     ly_in_free(in, 0);
 }
 
@@ -1279,7 +1279,7 @@
     /* missing leafref */
     assert_int_equal(LY_EVALID, lyd_validate_op(op_tree, NULL, LYD_TYPE_REPLY_YANG, NULL));
     CHECK_LOG_CTX("Invalid leafref value \"target\" - no existing target instance \"/lf4\".",
-            "Schema location /j:cont/l1/act/output/lf2, data location /j:cont/l1[k='val1']/act/lf2.");
+            "Schema location \"/j:cont/l1/act/output/lf2\", data location \"/j:cont/l1[k='val1']/act/lf2\".");
 
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:j\">\n"
             "  <lf1>not true</lf1>\n"
@@ -1289,7 +1289,7 @@
 
     /* input must false */
     assert_int_equal(LY_EVALID, lyd_validate_op(op_tree, tree, LYD_TYPE_REPLY_YANG, NULL));
-    CHECK_LOG_CTX("Must condition \"../../lf1 = 'true2'\" not satisfied.", "Data location /j:cont/l1[k='val1']/act.");
+    CHECK_LOG_CTX("Must condition \"../../lf1 = 'true2'\" not satisfied.", "Data location \"/j:cont/l1[k='val1']/act\".");
 
     lyd_free_all(tree);
     CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:j\">\n"
@@ -1380,7 +1380,7 @@
             "  }\n"
             "}\n", LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
     CHECK_LOG_CTX("Data for both cases \"v0\" and \"v2\" exist.",
-            "Schema location /k:ch/a0, data location /k:ch, line number 5.");
+            "Schema location \"/k:ch/a0\", data location \"/k:ch\", line number 5.");
 
     CHECK_PARSE_LYD_PARAM(
             "{\n"
@@ -1390,7 +1390,7 @@
             "  }\n"
             "}\n", LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
     CHECK_LOG_CTX("Data for both cases \"v0\" and \"v2\" exist.",
-            "Schema location /k:ch/a0, data location /k:ch, line number 5.");
+            "Schema location \"/k:ch/a0\", data location \"/k:ch\", line number 5.");
 }
 
 int