--- a/streamlet-examples/cloc	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/cloc	Sun Jan 19 18:00:31 2020 +0100
@@ -25,7 +25,7 @@
 # Optional prefix can be added to attribute names: --option 'prefix' 'my_prefix_'
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	clocFields=()

--- a/streamlet-examples/exiftool	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/exiftool	Sun Jan 19 18:00:31 2020 +0100
@@ -25,7 +25,7 @@
 #  - "available_attributes" – list of available attributes (each file may have different) separated by line-breaks (TODO: return as an array of strings, when this data type is implemented)
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	streamletFields=()

--- a/streamlet-examples/exiv2	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/exiv2	Sun Jan 19 18:00:31 2020 +0100
@@ -23,7 +23,7 @@
 # Two additional attributes are provided by this streamlet: "Image height" and "Image width" (they are extracted from "Image size").
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	streamletFields=()

--- a/streamlet-examples/hash	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/hash	Sun Jan 19 18:00:31 2020 +0100
@@ -30,7 +30,7 @@
 #   --scriptlet hash --option "sha1" --as "sha1" --option "sha256" --as "sha256"
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	hashTypes=()

--- a/streamlet-examples/inode	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/inode	Sun Jan 19 18:00:31 2020 +0100
@@ -19,7 +19,7 @@
 # This streamlet provides a single attribute: inode number of given file
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	send OUTPUT_ATTRIBUTE_METADATA "${outputAttributeAliases[0]-inode}"    "integer"

--- a/streamlet-examples/lines_count	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/lines_count	Sun Jan 19 18:00:31 2020 +0100
@@ -21,7 +21,7 @@
 # Directories are reported a 0 lines and with a null flag (will be supported in further Relational pipes versions).
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	send OUTPUT_ATTRIBUTE_METADATA "${outputAttributeAliases[0]-lines_count}"    "integer"

--- a/streamlet-examples/mime_type	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/mime_type	Sun Jan 19 18:00:31 2020 +0100
@@ -20,7 +20,7 @@
 # It calls the tool file.
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	send OUTPUT_ATTRIBUTE_METADATA "${outputAttributeAliases[0]-mime_type}"    "string"

--- a/streamlet-examples/pdfinfo	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/pdfinfo	Sun Jan 19 18:00:31 2020 +0100
@@ -22,7 +22,7 @@
 # List of available attributes can be obtained by directly calling the pdfinfo command on a PDF file.
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	pdfFields=()

--- a/streamlet-examples/pdftotext	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/pdftotext	Sun Jan 19 18:00:31 2020 +0100
@@ -20,7 +20,7 @@
 # n.b. the plain text content must fit into memory and shell variable and command-line argument (it usually will)
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	send OUTPUT_ATTRIBUTE_METADATA "${outputAttributeAliases[0]-pdftotext}"    "string"

--- a/streamlet-examples/tesseract	Sun Jan 19 17:05:46 2020 +0100
+++ b/streamlet-examples/tesseract	Sun Jan 19 18:00:31 2020 +0100
@@ -20,7 +20,7 @@
 # Languages can be specified by: --option "language" "eng" --option "language" "ces"
 
 
-. "$(dirname $0)/streamlet-common.sh"
+. "$(dirname "$0")/streamlet-common.sh"
 
 processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {
 	tesseractLanguage="";