Severity: wishlist
Tags: patch
The attached patch speeds up json-encode by inserting into a buffer
rather than concatenating strings. It does so backward compatibly by
creating a new json--print-* namespace that mirrors the existing
json-encode-* namespace, cleaning it up a bit and reducing code
duplication in the process.
Using my usual benchmark from bug#40693#89:
canada.json
old (1.412693239 96 0.736882091)
new (1.154423962 32 0.248241551)
citm_catalog.json
old (0.676292855 68 0.5285956769999993)
new (0.306573098 12 0.0965493740000003)
twitter.json
old (0.353447016 40 0.28536439900000055)
new (0.142140227 8 0.05943713899999992)
Note that one of the unit tests depends on the patch to map.el in
bug#46754 in order to pass.