mycmd VS nsd

Woah, this is very cool. I may try to adopt this.

I recently discovered, similar to the author of the post for this thread, that local variables are dynamically scoped.

I have been writing a lot more shell scripts lately, using a "library" [1] of sorts I've been writing. When I was debugging one of my scripts that uses mycmd, I discovered that I had failed to declare some of my variables local and they were leaking out to the global scope.

I had recently added functionality to call a set of functions on script exit, so I added something that would output the defined variables, in hopes that I could write something that will output them at the beginning and then the end and show the difference. I was surprised when variables defined in my dispatch function [2] for those at exit functions were showing up, even though they were definitely defined as local. It was then that I dug around and discovered the dynamic scope of variables.

I've been trying to figure out how to accomplish what I desire but exclude those variables from calling functions. I haven't been able to find an obvious way to see if the variable is coming from a calling function. I might be able to use techniques like you've pointed out in your linked post to add the tracing that I want. Still need to think more on this.

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[1] https://github.com/travisbhartwell/mycmd

Repository of scripts written in the language - https://github.com/ngs-lang/nsd

> there isn't really an entry point in murex scripts

I have a nice trick in NGS for that. Under the idea that "small scripts should not suffer", script is running top to bottom without "entry point". However, if the script has defined main() function, it is invoked (with command line arguments passed).

Example - https://github.com/ngs-lang/nsd/blob/afe0cad5e506ec4ee2fa924...

> `args` still contains more boilerplate code than I'm happy with

Is there anything preventing you to have exactly the same functionality but with syntactic sugar that it looks like parameters declaration? (Just to be clear, keeping all the ARGV machinery).

Something like (assuming local variables are supported; if not, it could still be $args[Flags] etc):

  function hippo(name:str, hungry:bool) {

NGS Scripts Dumpster - collection of small scripts in NGS

Doing DevOps today? 99% either abuse bash or abuse a general purpose programming language.

bash does not meet any modern expectations from a programming language: syntax, error handling, data structures

General purpose languages such as Python, Ruby, etc are not domain specific enough to have the desired facilities.

Here is small example of straightforward solution to a small problem: list all CloudFormation stacks that are managed by the given CodePipeline.

https://github.com/ngs-lang/nsd/blob/02d66abb844b7dd6077b9976e3a03659cf4b3660/aws/codepipeline/pipeline-stacks.ngs

The script is at https://github.com/ngs-lang/nsd/blob/master/aws/cloudformation/delete-stack.ngs