kish - a simple shell, aspiring to be fully POSIX-compatibile in the future

Syntax highlighting	Interactive history

What currently works:

• simple commands
• quoting
• redirections (> file)
• piping (command1 | command2)
• conditional execution: && and ||
• compound commands ({ command1; command2 } | command3)
• builitins:
  • true
  • false
  • cd (without -P and -L)
  • source
• if statements: if <command-list>; then <command-list>; [else <command-list>]; fi
• while and until loops
• for loops
• piping and redirecting to/from bulitins/command lists/if statements
• user defined variables
• special variables:
  • return value from last command - $?
  • current pid - $$
• inline environment variables (HOME='/' command)
• $() command substitution
• basic interactive syntax highlighting
• history saved in ~/.kish_history
• interactive history lookup ala fish (but with up to 4 simultaneous search results)
• loading ~/.kishrc

Building

The kish shell depends on tcbrindle/span and AmokHuginnsson/replxx. Those dependencies can be pulled from git submodules:

$ git submodule update --init

$ cmake .
$ make

Testing

The kish shell can be tested by a shell script located in test/tests.sh. Simply run the shellscript with a path to built kish as its argument.