Relative package nicknames through macros

pseudonyms

# pseudonyms

#### A reader-macro way to create non-destructive nicknames within portable Common Lisp

## Usage

**DON'T USE.** Use [package-local nicknames](https://github.com/phoe/trivial-package-local-nicknames) instead.

## Readme

I found that Lisp nicknames, as defined in CLHS, have a few problems that I
will count here.

* 1) They are not changeable without internal side-effects. RENAME-PACKAGE is destructive, as it kills off any previous names the package.
* 2) They collide. Nickname GL is used by at least three different Lisp packages.

The solution I provide here is a different approach to nicknames that does not use any of the original nickname code, as defined in CLHS.

To begin quickly:
```common-lisp
> (pseudonyms:pseudonyms-on)
```

Pseudonyms, in opposition to nicknames, can be defined by the user inside one's code, like this:
```common-lisp
> (defpseudonym :longpackagename "lpn")
```

And removed like this:
```common-lisp
> (pmakunbound "lpn") ;; OR (pmakunbound :longpackagename)
```

From within the code, one can refer to a pseudonymized package this way:
```common-lisp
> $lpn:something
```
A reader macro will automatically translate it to its normal version of `longpackagename:something.` This is usable both within the REPL and within usual code.

The reader macro character is also settable from the default `#\$`:
```common-lisp
> (set-pseudonym-macro-character #\^)
```

All pseudonyms are local to the current package: for instance, pseudonyms defined within CL-USER are not usable anywhere outside the CL-USER package.

An utility function `print-pseudonyms` will print all pseudonyms for a given package. If not supplied a package name as an argument, it will print all pseudonyms for current package (as shown by the `*package*` global variable).


pseudonyms

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