refactor(sterni/blërg): try to improve code readability

- Reduce visual noise, e.g. parens where it hurts readability.
- Separate parts of trains visually where it helps readability.
- Reduce amount of unnecessarily pointfree code.

Change-Id: Ie0ef03af7d344863a81bf0557b90a4dfb7974e84
Reviewed-on: https://cl.tvl.fyi/c/depot/+/13126
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI

users/sterni/blërg/blërg.bqn

@@ -11,20 +11,20 @@
 
 MkDirP ← •file.CreateDir⍟(¬•file.Exists)
 
-AsciiDown ← ('A'-'a')⊸(⊢-×⟜('A'⊸≤∧≤⟜'Z'))
+AsciiDown ← ⊢ - ('A'-'a')⊸×⟜('A'⊸≤∧≤⟜'Z')
-Slugify ← '-'⊸⊣⍟(¬(('A'⊸≤∧'z'⊸≥)∨<⊸(⊑∊)⟜"-_0123456789"))¨ AsciiDown
+Slugify ← '-'⊸⊣⍟(('A'⊸≤ ∧ ≤⟜'z') ¬∘∨ "-_0123456789"⊸(⊑∊˜)⟜<)¨ AsciiDown
 
 DropPrefix ← {𝕩(≠/⊣)𝕨↑˜≠𝕩}
-StripLeft ← ((¬ ∧`∘=)/⊢)
+StripLeft ← (¬ ∧`∘=)/⊢
 StripRight ← ⌽ StripLeft⟜⌽
 
 _join ← {(∾⟜(𝕗⊸∾))´𝕩;𝕨∾𝕗∾𝕩}
 
 nl ← @+10
-SplitChar ← ((=(¯1˙⍟⊣)¨+`∘=)⊔⊢)
+SplitChar ← (= (¯1˙⍟⊣)¨ +`∘=)⊔⊢
 Lines ← nl⊸SplitChar
 
-ReadPosInt ← {(𝕨⊸×+⊣)´∘⌽-⟜'0'𝕩} # ty leah2
+ReadPosInt ← {(𝕨⊸×+⊣)´ ⌽'0'-˜𝕩} # ty leah2
 ReadPosDec ← 10⊸ReadPosInt
 
 Chomp ← {⟨nl⟩≡¯1↑𝕩? ¯1↓𝕩; 𝕩}
@@ -90,7 +90,7 @@ converters ← ⍉>⟨
 
 # TODO(sterni): don't assemble blocks in this ad hoc fashion
 # TODO(sterni): pipefail
-PipelineCmd ← {"pipeline"⋈⊸∾(' '⊸∾¨𝕨)∾""⋈⊸∾𝕩}
+PipelineCmd ← {⟨"pipeline"⟩∾(' '⊸∾¨𝕨)∾⟨""⟩∾𝕩}
 
 GitBackend ← {𝕊 config:
   repo ← RelPath •file.At config j.ObjGet "repository"
@@ -155,14 +155,14 @@ config ← {
   raw ← j.Parse •FChars configFile
 
   [bns,bcs] ← raw j.ObjGet "backends"
-  bcs ↩ bcs ∾˘⟜{2‿1⊸⥊"name"‿𝕩}¨ bns
+  bcs ↩ bcs ∾˘⟜{2‿1⥊"name"‿𝕩}¨ bns
-  bts ← (j.ObjGet⟜"type")˜¨ bcs
+  bts ← j.ObjGet⟜"type"¨ bcs
   backends ⇐ bcs {𝕏 𝕨}¨ backends⊸j.ObjGet¨ bts
 
   title ⇐ raw j.ObjGet "title"
 }
 
-entries ← (<"time") ((⍒∘(•ns.Get˜¨))⊏⊢) ∾{𝕩.Entries @}¨ config.backends
+entries ← ((⍒ •ns.Get⟜"time"¨)⊏⊢) ∾{𝕩.Entries @}¨ config.backends
 "All entry IDs must be unique"!(≠=≠∘⍷) •ns.Get⟜"id"¨ entries
 
 MkDirP outDir