added selection-mix fail test

Author: holgerbrandl

docs/support_api.md

@@ -1,34 +1,19 @@
 # Scripting Tutorial
 
 
-# `sed`/`awk`-like streaming
+__{work in progress}__
 
+# `sed`/`awk`-like table processing
 
-Use `argMap` to abstract from file input argument
-```bash
+See see this [blog post](http://holgerbrandl.github.io/kotlin/2017/05/08/kscript_as_awk_substitute.html).
 
-## extract column
-kscript 'argMap(args[1]) { it.split("\t")[7] }' big-file.txt
-
-## also extract column but from stdin
-cat big-file.txt | kscript 'argMap(args[1]) { it.split("\t")[7] }' -
-        
-```
-
-Use `argFilter` to perform grep-lik operations
-```
-kscript 'argFilter(args[1]) { it.split("\t")[7] == "UA" }' src/test/resources/flights_head.txt
+Perform grep-lik operations
+```kscript
+kscript 'lines.split().filter{ it[7] == "UA" }' src/test/resources/some_flights.txt
 ```
 
-## Table processing
-
 For very general table processing, we recommend [csvkit](https://csvkit.readthedocs.io). For more specific table processing you should most likely push tables through R.
 
-However, for more typed dat
-We recommend [krangl] to crunch tables with `kscript`.
-
-
-
 
 ## Bioinformatics
 

examples/unit_tests.sh

@@ -102,6 +102,7 @@ assert 'echo "foo${NL}bar" | kscript "stdin.print()"' $'foo\nbar'
 #echo "$'foo\nbar' | kscript 'stdin.print()'
 
 assert 'echo "foo${NL}bar" | kscript "stdin.print()"' $'foo\nbar'
+assert_statement 'echo "foo${NL}bar" | kscript "stdin.split().select(1, 2, -3)"' "" "[ERROR] Can not mix positive and negative selections" 1