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Pure Python Vim clone

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Re: Pure Python Vim clone

#12

Post by jonathan_s »

mkonecny wrote: post #10

Was this more of a blackbox re-implementation, or is more of a 1:1 code port?

It's a blackbox re-implementation. In Python, things are done different from C and there are other libraries are available (Pygments for instance). I also don't want to claim that it is as powerful as Vim is. But it should be stable, easy to install, and especially usable for Python development.

Re: Pure Python Vim clone

#15

Post by david-given »

evmar wrote: post #9

My thought process upon seeing this: "Python, huh? Seems like typos in uncommon branches of the code would cause it to randomly fail at runtime, losing your work!" "Now evmar, don't be such a internet nay-sayer, plenty of people write reliable Python code. You just need tests and... yep, there's a tests directory right there in the repository." "Let's take a look. ...there's only one test!?" It looks pretty neat othe…

I am, right now, or at least two minutes ago before I started reading HN, refactoring big chunks of _my_ text editor, WordGrinder. It's a almost-pure-Lua word processor.

In the process I have been writing unit tests. Previously the program didn't have any, which was really dumb. It was dumb because, in the three days I've spent doing this, I have found (and fixed) so, _so_ many bugs.

And now I have a decent set of tests, I can change something, rerun them, and have a pretty good idea of whether it worked or not. I don't even have to run the program!

Unit tests. They Will Save You Time™.

Re: Pure Python Vim clone

#16

Post by fadsasda432 »

kgadek wrote: post #13

Q: Why Python? A: The only alternative would be Haskell, but I still have to learn that. Wow, that would be interesting.

Hi, I once tried that, but I ran into problems with lazyness. In particular my data structure was rather simple (famous gap data structure), but editing "large" files (>1000LOC) became rather unpleasant (too big input-feedback latency).

However I managed to build a _very_ basic proof-of-concept editor (no dependencies) in just a few hundreds lines of code which I could explain, but until now I was too shy to share it as it did not involve magic abstract Haskell-foo ... ;)

Re: Pure Python Vim clone

#19

Post by teacup50 »

david-given wrote: post #15
evmar wrote: post #9

My thought process upon seeing this: "Python, huh? Seems like typos in uncommon branches of the code would cause it to randomly fail at runtime, losing your work!" "Now evmar, don't be such a internet nay-sayer, plenty of people write reliable Python code. You just need tests and... yep, there's a tests directory right there in the repository." "Let's take a look. ...there's only one test!?" It looks pretty neat othe…

I am, right now, or at least two minutes ago before I started reading HN, refactoring big chunks of _my_ text editor, WordGrinder. It's a almost-pure-Lua word processor. In the process I have been writing unit tests. Previously the program didn't have any, which was really dumb. It was dumb because, in the three days I've spent doing this, I have found (and fixed) so, _so_ many bugs. And now I have a decent set of te…

Types. They Will Save You Tests™ :-)

Re: Pure Python Vim clone

#20

Post by keslag »

teacup50 wrote: post #19
david-given wrote: post #15

Earlier quoted context omitted.

I am, right now, or at least two minutes ago before I started reading HN, refactoring big chunks of _my_ text editor, WordGrinder. It's a almost-pure-Lua word processor. In the process I have been writing unit tests. Previously the program didn't have any, which was really dumb. It was dumb because, in the three days I've spent doing this, I have found (and fixed) so, _so_ many bugs. And now I have a decent set of te…

Types. They Will Save You Tests™ :-)

Types will create a false sense of security...
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