Vim window logic, slimv

sbcl/.quicklisp/dists/quicklisp/software/anaphora-20191007-git/README.md

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+# Anaphora
+
+Anaphora is the anaphoric macro collection from Hell: it includes many
+new fiends in addition to old friends like `AIF` and `AWHEN`.
+Anaphora has been placed in Public Domain by the author, [Nikodemus
+Siivola](mailto:nikodemus@random-state.net).
+
+# Installation
+
+Use [quicklisp](http://www.quicklisp.org/), and simply:
+
+```
+CL-USER(1): (ql:quickload "anaphora")
+```
+
+# Documentation
+
+Anaphoric macros provide implicit bindings for various
+operations. Extensive use of anaphoric macros is not good style,
+and probably makes you go blind as well — there's a reason why
+Anaphora claims to be from Hell.
+
+Anaphora provides two families of anaphoric macros, which can be
+identified by their names and packages (both families are also
+exported from the package `ANAPHORA`). The implicitly-bound symbol
+`ANAPHORA:IT` is also exported from all three packages.
+
+## Basic anaphora
+
+#### Exported from package `ANAPHORA-BASIC`
+
+These bind their first argument to `IT` via `LET`. In case of `COND`
+all clauses have their test-values bound to `IT`.
+
+Variants: `AAND`, `ALET`, `APROG1`, `AIF`, `ACOND`, `AWHEN`, `ACASE`,
+`ACCASE`, `AECASE`, `ATYPECASE`, `ACTYPECASE`, and `AETYPECASE`.
+
+## Symbol-macro anaphora
+
+#### Exported from package `ANAPHORA-SYMBOL`
+
+These bind their first argument (unevaluated) to `IT` via
+SYMBOL-`MACROLET.`
+
+Variants: `SOR`, `SLET`, `SIF`, `SCOND`, `SUNLESS`,
+`SWHEN`, `SCASE`, `SCCASE`, `SECASE`, `STYPECASE`, `SCTYPECASE`,
+`SETYPECASE`.
+
+Also: `ASIF`, which binds via `LET` for the
+then-clause, and `SYMBOL-MACROLET` for the else-clause.