fix(init): handle Fish empty-line collapse in fzf --expect output

Fish command substitution collapses empty lines, so when Enter is
pressed with --expect, the empty key line disappears and the array
has only 1 element instead of 2. Detect this by checking count and
adjust indices accordingly.

Also strengthen the fish enter test to validate string split + set dir
parsing rather than just checking for 'cd '.

Author: helizaga

lib/commands/init.sh

@@ -341,8 +341,15 @@ function __FUNC__
       or return 0
       test -z "$_gtr_selection"; and return 0
       # --expect gives two lines: key (index 1) and selection (index 2)
-      set -l _gtr_key "$_gtr_selection[1]"
-      set -l _gtr_line "$_gtr_selection[2]"
+      # Fish collapses empty lines in command substitution, so when Enter
+      # is pressed the empty key line disappears and count drops to 1.
+      if test (count $_gtr_selection) -eq 1
+        set -l _gtr_key ""
+        set -l _gtr_line "$_gtr_selection[1]"
+      else
+        set -l _gtr_key "$_gtr_selection[1]"
+        set -l _gtr_line "$_gtr_selection[2]"
+      end
       test -z "$_gtr_line"; and return 0
       # ctrl-a/ctrl-e: run after fzf exits (needs full terminal for TUI apps)
       if test "$_gtr_key" = "ctrl-a"

tests/init.bats

@@ -241,8 +241,10 @@ setup() {
 @test "fish fzf enter extracts path from selection and cd" {
   run cmd_init fish
   [ "$status" -eq 0 ]
-  # Fish uses string split or cut to extract path
-  [[ "$output" == *'cd '* ]]
+  # Fish uses string split to extract path, then cd
+  [[ "$output" == *'string split'* ]]
+  [[ "$output" == *'set dir'* ]]
+  [[ "$output" == *'cd $dir'* ]]
 }
 
 # ── fzf: ctrl-e (editor) — via --expect ──────────────────────────────────────