Fix cursor position after accepting Vi mode autosuggestion

Closes #12430

CHANGELOG.rst

@@ -4,6 +4,7 @@ fish ?.?.? (released ???)
 Regression fixes:
 -----------------
 - (from 4.4.0) Vi mode ``d,f`` key binding (:issue:`12417`).
+- (from 4.4.0) Vi mode crash on ``c,i,w`` after accepting autosuggestion (:issue:`12430`).
 - (from 4.4.0) ``fish_vi_key_bindings`` called with mode argument (:issue:`12413`).
 
 fish 4.4.0 (released February 03, 2026)

src/reader/reader.rs

@@ -5683,6 +5683,7 @@ fn accept_autosuggestion(&mut self, amount: AutosuggestionPortion) {
         };
         self.data
             .replace_substring(EditableLineTag::Commandline, range, replacement);
+        self.update_buff_pos(self.active_edit_line_tag(), None);
     }
 }
 

tests/pexpects/vi-key-bindings.py

@@ -20,3 +20,11 @@ send(2 * "dge")
 sendline("")
 expect_re(r"\bvi\b")
 expect_prompt()
+
+sendline("echo suggest-this")
+send("ech")
+send("\033")
+sleep(1)
+send("li123")
+sendline("")
+expect_re(r"\bsuggest-thi123s\b")