September 2017 Update

Task/Strip-comments-from-a-string/Jq/strip-comments-from-a-string-1.jq

@@ -0,0 +1 @@
+sub("[#;].*";"") | sub("^\\s+";"") |  sub("\\s+$";"")

Task/Strip-comments-from-a-string/Jq/strip-comments-from-a-string-2.jq

@@ -0,0 +1,20 @@
+# define whitespace here as a tab, space, newline, return or form-feed character:
+def is_whitespace: . as $in | " \n\r\f\t" | index($in);
+
+def ltrim:
+  if .[0:1] | is_whitespace then (.[1:]|ltrim) else . end;
+
+def rtrim:
+  if .[length-1:] | is_whitespace then .[0:length-1]|rtrim else . end;
+
+def trim: ltrim | rtrim;
+
+def strip_comment:
+  index("#") as $i1 | index(";") as $i2
+  | (if $i1 then if $i2 then [$i1, $i2] | min
+                 else $i1
+                 end
+     else $i2
+     end ) as $ix
+  | if $ix then .[0:$ix] else . end
+  | trim;

Task/Strip-comments-from-a-string/Jq/strip-comments-from-a-string-3.jq

@@ -0,0 +1 @@
+" abc ; def # ghi" | strip_comment

Task/Strip-comments-from-a-string/Jq/strip-comments-from-a-string-4.jq

@@ -0,0 +1 @@
+"abc"