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OSH Standard Library - Tiny Code, Evolved Over Years

The OSH standard library runs under both OSH and bash. (YSH has a separate standard library.)

This doc briefly describes a few hundred lines of code, documented in the Oils reference:

• Oils Reference > OSH Table of Contents

Intro

I use shell as a quick / iterative / incremental development environment.

I use "task files" and write down everything I do, so I don't forget them.

They evolve and grew over time, but are still small.

Example of Task File

: ${LIB_OSH=stdlib/osh}  # to share with bash
source $LIB_OSH/bash-strict.sh
source $LIB_OSH/task-five.sh

test-foo() {
  echo hi
}

task-five "$@"

List of Libraries

two

Trivial functions I use all the time.

bash-strict

Catch errors.

Saves you some boilerplate.

no-quotes

Test framework without extra levels of quoting. Compare to git sharness.

nq-capture
nq-capture-2
nq-assert

byo-server

• Test discovery
• Probably:
  • task discovery
  • auto-completion

May want to fold this into task-five.

task-five

• Task files

Appendix

Why no standard way to set $REPO_ROOT?

We commonly use this idiom:

REPO_ROOT=$(cd $(dirname $0)/..; pwd)

But there is no library for it, because there's no standard way for it. Other variants I've seen:

pwd -P          # we use pwd 
readlink -f $0  

That is, there's not one way to do it when symlinks are involved.

Most of our scripts must be run from repo root, and there are no symlinks to them.

(Note that in OSH or YSH you can use $_this_dir instead of $REPO_ROOT, but it's not available in bash.)