Registers hold a value per range, and "<reg> names one

Registers.zig replaces the one yank buffer: every register keeps a value per
range, y fills them in document order, and p, P, R and insert Ctrl-r put
value i at range i, repeating the last (helix paste_impl). "<reg> names the
register for the next command; _ swallows, # numbers the ranges, . is each
range's text, % the file's name, / the last s/S pattern, and + and * are the
system clipboard through the ClipYank and ClipPaste paths. SPC y now writes
+ alone, as helix's does. The acme chords and a paste into a terminal take
the default register joined by newlines. The msel-yank-paste waiver is gone.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 13 insertions, 0 deletions

diff --git a/test/hxcases/goldens.jsonl b/test/hxcases/goldens.jsonl
index 006524e8..f6a6aada 100644
--- a/test/hxcases/goldens.jsonl
+++ b/test/hxcases/goldens.jsonl
@@ -442,6 +442,19 @@
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 {"name":"msel-flip","text":"abcd\nabcd\n","mode":"select","cursor":{"row":1,"col":0},"anchor":{"row":1,"col":2},"sels":[{"cursor":{"row":0,"col":0},"anchor":{"row":0,"col":2}},{"cursor":{"row":1,"col":0},"anchor":{"row":1,"col":2}}],"primary":1}
 {"name":"msel-yank-paste","text":"aab\nccd\n","mode":"normal","cursor":{"row":1,"col":1},"anchor":{"row":1,"col":1},"sels":[{"cursor":{"row":0,"col":1},"anchor":{"row":0,"col":1}},{"cursor":{"row":1,"col":1},"anchor":{"row":1,"col":1}}],"primary":1}
+{"name":"reg-named-yank-paste","text":"ab acd\n","mode":"normal","cursor":{"row":0,"col":3},"anchor":{"row":0,"col":3}}
+{"name":"reg-named-keeps-default","text":"cad\n","mode":"normal","cursor":{"row":0,"col":1},"anchor":{"row":0,"col":1}}
+{"name":"reg-blackhole-delete","text":"acd\n","mode":"normal","cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0}}
+{"name":"msel-reg-paste-per-range","text":"aaaab\nccccd\n","mode":"normal","cursor":{"row":1,"col":3},"anchor":{"row":1,"col":3},"sels":[{"cursor":{"row":0,"col":3},"anchor":{"row":0,"col":3}},{"cursor":{"row":1,"col":3},"anchor":{"row":1,"col":3}}],"primary":1}
+{"name":"msel-reg-fewer-values","text":"aab\ncad\neaf\n","mode":"normal","cursor":{"row":2,"col":1},"anchor":{"row":2,"col":1},"sels":[{"cursor":{"row":0,"col":1},"anchor":{"row":0,"col":1}},{"cursor":{"row":1,"col":1},"anchor":{"row":1,"col":1}},{"cursor":{"row":2,"col":1},"anchor":{"row":2,"col":1}}],"primary":2}
+{"name":"msel-reg-replace-per-range","text":"ab\ncd\n","mode":"normal","cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0},"sels":[{"cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0}},{"cursor":{"row":1,"col":0},"anchor":{"row":1,"col":0}}],"primary":0}
+{"name":"msel-reg-more-values-one-range","text":"ab\ncad\n","mode":"normal","cursor":{"row":1,"col":1},"anchor":{"row":1,"col":1}}
+{"name":"reg-index-insert","text":"1x\n2x\n3x\n","mode":"normal","cursor":{"row":0,"col":1},"anchor":{"row":0,"col":1},"sels":[{"cursor":{"row":0,"col":1},"anchor":{"row":0,"col":1}},{"cursor":{"row":1,"col":1},"anchor":{"row":1,"col":1}},{"cursor":{"row":2,"col":1},"anchor":{"row":2,"col":1}}],"primary":0}
+{"name":"reg-search-paste","text":"abb\n","mode":"normal","cursor":{"row":0,"col":2},"anchor":{"row":0,"col":2}}
+{"name":"reg-count-before-quote","text":"ab\n","mode":"normal","cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0}}
+{"name":"reg-count-after-quote","text":"aaaab\n","mode":"normal","cursor":{"row":0,"col":3},"anchor":{"row":0,"col":1}}
+{"name":"reg-ctrl-r-named","text":"aab\n","mode":"normal","cursor":{"row":0,"col":2},"anchor":{"row":0,"col":2}}
+{"name":"reg-ctrl-r-esc","text":"xab\n","mode":"insert","cursor":{"row":0,"col":1},"anchor":{"row":0,"col":1}}
 {"name":"msel-esc-keeps","text":"aa\nbb\n","mode":"normal","cursor":{"row":1,"col":0},"anchor":{"row":1,"col":0},"sels":[{"cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0}},{"cursor":{"row":1,"col":0},"anchor":{"row":1,"col":0}}],"primary":1}
 {"name":"msel-select-mode","text":"abcd\nabcd\n","mode":"select","cursor":{"row":1,"col":1},"anchor":{"row":1,"col":0},"sels":[{"cursor":{"row":0,"col":1},"anchor":{"row":0,"col":0}},{"cursor":{"row":1,"col":1},"anchor":{"row":1,"col":0}}],"primary":1}
 {"name":"msel-open-count","text":"\n\nab\n","mode":"insert","cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0},"sels":[{"cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0}},{"cursor":{"row":1,"col":0},"anchor":{"row":1,"col":0}}],"primary":0}