fix(console): backspace deletes char not word in emacs keymap (#2209)

[Moriz82]

Bug

In the sliver console, pressing Backspace deletes the whole previous word. Type beaconss, hit Backspace, everything disappears instead of just the last s. Reported on Kali, but it hits any Linux terminal that sends \C-h (0x08) on Backspace.

Cause

vendor/github.com/reeflective/readline/internal/keymap/emacs.go has a table emacsKeys with a bad entry:

unescape(`\C-h`): {Action: "backward-kill-word"},

That line shadows the correct DefaultBinds() entry (\C-h → backward-delete-char). GNU readline convention: \C-h is single-char delete, \M-\C-h is word-kill. The override got it backwards.

Fix

Delete the one bad line. DefaultBinds() already has the right binding, and \M-\C-h (Meta-Backspace) still does word-kill.

 var emacsKeys = map[string]inputrc.Bind{
 	unescape(`\C-D`):     {Action: "end-of-file"},
-	unescape(`\C-h`):     {Action: "backward-kill-word"},
 	unescape(`\C-N`):     {Action: "down-line-or-history"},

Tested

Built on a Kali arm64 VM (6.18). Master deletes the whole word; patched binary deletes one char. Meta-Backspace still kills the word like it should.

Change lives in vendor/ per the "vendor changes in a distinct commit" rule.

Fixes #2209

[moloch--]

These edits will need to be in https://github.com/moloch--/readline the vendor/ directory is external dependencies we don't want to edit them directly from this repo.

[Moriz82]

Thanks for the pointer, makes sense, I missed that vendor/ is generated. Opened a PR at https://github.com/moloch--/readline/pull/1 with the same fix and will cross-reference it here.