Bump the default REPL history size to 5000

History is cheap, and 500 entries is easy to blow through in a day of
REPL work.  Also freshen cider-print-buffer-size's docstring, which
still described the pre-#4049 per-chunk font-locking behavior; its 4K
default stays - benchmarking chunk sizes against a live nREPL showed
no measurable difference between 4K and 16K, and a regression at 64K.

Author: bbatsov

CHANGELOG.md

@@ -60,6 +60,7 @@
 
 ### Changes
 
+- Bump the default `cider-repl-history-size` from 500 to 5000.
 - Rename the REPL history browser from `cider-repl-history` to `cider-history` (command, mode and options), so its names no longer clash with the REPL's unrelated input-history settings (`cider-repl-history-file`, `cider-repl-history-size`); the old names keep working as obsolete aliases.
 - Color the nREPL messages buffer with theme-aware faces (`nrepl-message-faces`, eight faces inheriting from standard font-lock faces) instead of a hardcoded color list; `nrepl-message-colors` is now obsolete, but still takes precedence when customized.
 - Consolidate the per-buffer auto-select options into a single `cider-auto-select-buffer`, which can be `t`, `nil` or a list of the popup buffers to select (e.g. `'(error inspector)`); the old options (`cider-auto-select-error-buffer`, `cider-auto-select-test-report-buffer`, `cider-doc-auto-select-buffer`, `cider-inspector-auto-select-buffer`, `cider-cheatsheet-auto-select-buffer` and `cider-log-auto-select-frameworks-buffer`) are now obsolete, but still take precedence when customized.

lisp/cider-client.el

@@ -490,9 +490,8 @@ Set to nil for no limit."
 
 (defcustom cider-print-buffer-size (* 4 1024)
   "The size in bytes of each value/output chunk when using print streaming.
-Smaller values mean smaller data chunks and faster feedback, but they also mean
-smaller results that can be font-locked as Clojure in the REPL buffers, as only
-a single chunk result can be font-locked.
+Smaller values mean faster first feedback, but also more messages for large
+results, with the associated decoding overhead.
 
 The default value in nREPL is 1024."
   :type 'integer

lisp/cider-repl.el

@@ -1775,7 +1775,7 @@ If USE-CURRENT-INPUT is non-nil, use the current input."
         (t nil)))
 
 ;;; persistent history
-(defcustom cider-repl-history-size 500
+(defcustom cider-repl-history-size 5000
   "The maximum number of items to keep in the REPL history."
   :type 'integer
   :safe #'integerp)