Try printing with formatting

scripts/count_decls.lean

@@ -36,6 +36,19 @@ structure TallyNames where
   types : HashSet Name := {}
   data  : HashSet Name := {}
 
+def toString (t : TallyNames) : String :=
+  let print (h : HashSet Name) : String :=
+    let tot := h.toList.map (·.toString)
+    String.intercalate ",\n" tot ++ ","
+  s!"Theorems
+{print t.thms}
+Data
+{print t.data}
+Predicates
+{print t.preds}
+Types
+{print t.types}"
+
 /-- `MathlibModIdxs env` returns the `ModuleIdx`s corresponding to `Mathlib` files
 that are in the provided environment. -/
 def MathlibModIdxs (env : Environment) : IO (HashSet Nat) := do
@@ -75,8 +88,9 @@ def mkTallyNames (s : TallyNames) : MetaM TallyNames := do
 /-- `count_decls` prints a tally of theorems, types, predicates and data in
 `Mathlib`, `Batteries` and core. -/
 elab "count_decls" : command => do
-  let (s, _) ← Command.liftCoreM do Meta.MetaM.run do (mkTallyNames {})
-  logInfo s!"Theorems\n{s.thms.toArray}\nData\n{s.data.toArray}\nPredicates\n{s.preds.toArray}\nTypes\n{s.types.toArray}"
+  let (s, _) ← Command.liftCoreM do MetaM.run do (mkTallyNames {})
+  IO.println (toString s)
+--  logInfo s!"def newTally :=  }Theorems\n{s.thms.toArray}\nData\n{s.data.toArray}\nPredicates\n{s.preds.toArray}\nTypes\n{s.types.toArray}"
 --  logInfo m!"{s.types.toArray}"
 --  logInfo s!"Theorems {s.thms}\nData {s.data}\nPredicates {s.preds}\nTypes {s.types}"
 

scripts/mathlib_stats.sh

@@ -48,8 +48,7 @@ net=$(awk -v gd="${gdiff}" 'BEGIN{
 # ...
 # ```
 getCountDecls () {
-  sed 's=^--\(count_decls\)=\1=' scripts/count_decls.lean | lake env lean --stdin |
-    sed -z 's=, *=,\n=g; s=[ [#]==g; s=]=,=g; s=\n\n*=\n=g'
+  sed 's=^--\(count_decls\)=\1=' scripts/count_decls.lean | lake env lean --stdin
 }
 
 # extracts
@@ -120,3 +119,5 @@ printf -- ' Reference commits: old %s, new %s.\n\n' "${oldCommitURL}" "${current
 printf -- '%s, %s total(insertions-deletions)\n\n' "${gdiff}" "${net}"
 
 printf -- 'Declarations:\n%s\n\nTake also a look at the [`Mathlib` stats page](%s).\n' "${declSummary}" "${statsURL}"
+
+printf 'head:\n%s\n\ntail:\n%s\n\n%s\n\ngrep ,.\n%s\n' "$(echo "${newDeclsTots}" | head)" "$(echo "${newDeclsTots}" | tail)" "$(echo "${newDeclsTots}" | grep -1 "[^,]$" | sed 's=---=-/-=')" "$(echo "${newDeclsTots}" | grep ",.")"