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]>

3 files changed, 26 insertions, 1 deletions

diff --git a/test/hxcases/cases.jsonl b/test/hxcases/cases.jsonl
index 487cd445..7ba44f09 100644
--- a/test/hxcases/cases.jsonl
+++ b/test/hxcases/cases.jsonl
@@ -442,6 +442,19 @@
 {"name": "msel-collapse", "pane": "file", "text": "abcd\nabcd\n", "keys": "vllC;"}
 {"name": "msel-flip", "pane": "file", "text": "abcd\nabcd\n", "keys": "vllC<A-;>"}
 {"name": "msel-yank-paste", "pane": "file", "text": "ab\ncd\n", "keys": "Cyp"}
+{"name": "reg-named-yank-paste", "pane": "file", "text": "ab cd\n", "keys": "\"ayw\"ap"}
+{"name": "reg-named-keeps-default", "pane": "file", "text": "ab cd\n", "keys": "yw\"ay\"_dp"}
+{"name": "reg-blackhole-delete", "pane": "file", "text": "ab cd\n", "keys": "yw\"_dP"}
+{"name": "msel-reg-paste-per-range", "pane": "file", "text": "ab\ncd\n", "keys": "Cyl2Pp"}
+{"name": "msel-reg-fewer-values", "pane": "file", "text": "ab\ncd\nef\n", "keys": "yCCp"}
+{"name": "msel-reg-replace-per-range", "pane": "file", "text": "ab\ncd\n", "keys": "Cy<A-(>Ry"}
+{"name": "msel-reg-more-values-one-range", "pane": "file", "text": "ab\ncd\n", "keys": "Cy,p"}
+{"name": "reg-index-insert", "pane": "file", "text": "x\nx\nx\n", "keys": "%<A-s>i<C-r>#<esc>"}
+{"name": "reg-search-paste", "pane": "file", "text": "ab\n", "keys": "%sb<ret>\"/p"}
+{"name": "reg-count-before-quote", "pane": "file", "text": "ab\n", "keys": "y2\"ap"}
+{"name": "reg-count-after-quote", "pane": "file", "text": "ab\n", "keys": "\"ay\"a3p"}
+{"name": "reg-ctrl-r-named", "pane": "file", "text": "ab\n", "keys": "\"ayli<C-r>a<esc>"}
+{"name": "reg-ctrl-r-esc", "pane": "file", "text": "ab\n", "keys": "i<C-r><esc>x"}
 {"name": "msel-esc-keeps", "pane": "file", "text": "aa\nbb\n", "keys": "C<esc>"}
 {"name": "msel-select-mode", "pane": "file", "text": "abcd\nabcd\n", "keys": "Cvl"}
 {"name": "msel-open-count", "pane": "file", "text": "ab\n", "keys": "2O"}
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 @@
 {"name":"msel-collapse","text":"abcd\nabcd\n","mode":"select","cursor":{"row":1,"col":2},"anchor":{"row":1,"col":2},"sels":[{"cursor":{"row":0,"col":2},"anchor":{"row":0,"col":2}},{"cursor":{"row":1,"col":2},"anchor":{"row":1,"col":2}}],"primary":1}
 {"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}
diff --git a/test/hxcases/waivers.jsonl b/test/hxcases/waivers.jsonl
index 01e6cfa7..8ac3bd9c 100644
--- a/test/hxcases/waivers.jsonl
+++ b/test/hxcases/waivers.jsonl
@@ -1,4 +1,3 @@
 {"name":"wiX-edit-drops-sel","reason":"Insert edits clear the selection instead of tracking its anchor.","reference":{"name":"wiX-edit-drops-sel","text":"Xalpha beta\n","mode":"normal","cursor":{"row":0,"col":1},"anchor":{"row":0,"col":6}},"expected":{"name":"wiX-edit-drops-sel","text":"Xalpha beta\n","mode":"normal","cursor":{"row":0,"col":1},"anchor":{"row":0,"col":1}}}
 {"name":"alt-c-window-op","reason":"Alt-c moves a pane to a new column instead of Helix's change-noyank.","reference":{"name":"alt-c-window-op","text":"bc def\n","mode":"insert","cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0}},"expected":{"name":"alt-c-window-op","text":"abc def\n","mode":"normal","cursor":{"row":0,"col":0},"anchor":{"row":0,"col":0}}}
 {"name":"msel-append","reason":"Append-mode selection origins are tracked only for the primary selection.","reference":{"name":"msel-append","text":"aza\nbzb\n","mode":"normal","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},"expected":{"name":"msel-append","text":"aza\nbzb\n","mode":"normal","cursor":{"row":1,"col":1},"anchor":{"row":1,"col":0},"sels":[{"cursor":{"row":0,"col":1},"anchor":{"row":0,"col":1}},{"cursor":{"row":1,"col":1},"anchor":{"row":1,"col":0}}],"primary":1}}
-{"name":"msel-yank-paste","reason":"Pardes has one combined yank register, not one value per selection.","reference":{"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},"expected":{"name":"msel-yank-paste","text":"aa\ncb\nca\ncd\n","mode":"normal","cursor":{"row":3,"col":0},"anchor":{"row":2,"col":1},"sels":[{"cursor":{"row":1,"col":0},"anchor":{"row":0,"col":1}},{"cursor":{"row":3,"col":0},"anchor":{"row":2,"col":1}}],"primary":1}}