escapeArg only doubles a backslash that precedes a quote or ends the
argument, the same rule as syscall.EscapeArg, and @ is not a cmd
metacharacter so it is not caret-escaped. The Windows expectations here
still asked for both. Checked by round-tripping each entry through
cmd.exe into a program's argv: all ten come back byte for byte.
The template writes to os.CreateTemp("", "fzf-temp-*"); the fzf-preview-
prefix went away with the --tmux work. The digit count was also pinned at
nine, but CreateTemp's suffix has no fixed width.
The file is opened under t.TempDir() and never closed, so the cleanup
that TempDir registers cannot remove it on Windows, where an open file
cannot be unlinked. The test itself passes; it is the cleanup that fails
the run. history_test.go and options_test.go already close theirs.
Windows has no SIGWINCH and notifyOnResize was an empty TODO, so fzf
running in --height mode never noticed console size changes. Poll the
console screen buffer dimensions every 100ms and push a signal through
the same channel SIGWINCH uses on Unix. Full-screen mode is unaffected
as it goes through tcell which emits its own resize events.
Cyrus