Add support for herestrings
Created by: klieth
Problem: #133 (closed)
Solution:
This adds a rule in the grammar for the <<< operator. It will capture a word/quoted string after it and feed that literal string, including an additional newline, to the stdin of the first process after it is spawned.
Drawbacks: This combines the execute_pipeline
and pipe
methods, making a pretty big single method.
Fixes: #133 (closed)