moltsh shell supports argv but not argc

[mcclure]

As an experiment in learning TCL, I tried doing an advent of code puzzle in TCL; once I'd finished, I tried running it in Molt. It did not work because of a lack of file i/o. Fair enough! However, the first problem I hit was the error

can't read "argc": no such variable

argc is a documented tcl global when running with a shell-type interpreter, like argv. In my testing¹, moltsh supports argc but not argv. My "expected behavior" is if you support one, you should support both; having argc independent of argv is useful because you can quickly test if the number of arguments is as expected.

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¹ Running with the above script and ~/work/gr/other/molt/target/release/moltsh shell src/puzzle.tcl data/sample.143.txt

[wduquette]

Thank you for the notice; I admit it never occurred to me to implement argc because I'd completely forgotten (if I'd ever noticed) that it exists. I would always just use [llength $argv].

However, Molt was a casualty of the pandemic, and I'm now working on other projects and hardly using TCL at all, in any form.