Implement @thomasjpfan version

cmarmo · cmarmo · commit 06b81190def6 · 2019-11-15T11:19:10.000+01:00
diff --git a/build_tools/circle/build_doc.sh b/build_tools/circle/build_doc.sh
@@ -85,32 +85,23 @@ get_build_type() {
         examples_in_rst="$(echo "$scripts_names" | uniq )"
     fi
 
-    #initialize pattern
-    pattern=""
-
     # executed only if there are examples in the modified rst files
     if [[ -n "$examples_in_rst" ]]
     then
-        pattern=$($pattern)$(echo "$examples_in_rst" | paste -sd '|' )
+	if [[ -n "$changed_examples" ]]
+	then
+		changed_examples="$changed_examples|$examples_in_rst"
+	else
+		changed_examples="$examples_in_rst"
+	fi
     fi
 
-    # executed only if some examples have been modified
     if [[ -n "$changed_examples" ]]
     then
-        pattern=$(echo $pattern)"|"$(echo "$changed_examples" | paste -sd '|')
-    fi
-
-    # cut trailing initial "|" if only examples in rst need to be built
-    if [[ $pattern="|" ]]
-    then
-       pattern=$(echo "$pattern" | cut -c 2-)
-    fi
-
-    # pattern for examples to run is the last line of output
-    if [[  -n "$pattern" ]]
-    then
-        echo BUILD: detected examples/ filename modified in $git_range: $pattern
-        echo $pattern
+        echo BUILD: detected examples/ filename modified in $git_range: $changed_examples
+        pattern=$(echo "$changed_examples" | paste -sd '|')
+        # pattern for examples to run is the last line of output
+        echo "$pattern"
         return
     fi
 
