Also bind "<tab>" in addition to "TAB" for lsp-ui-peek

When "<tab>" (which is the same as `[tab]` I believe) is not bound in `lsp-ui-peek-mode-map`, other keymaps that bind "<tab>" can grab a Tab-key press before it is handled as "TAB" by lsp-ui-peek. Therefore, also bind to "<tab>"/`[tab]` so that the key is always handled by lsp-ui-peek when the peek-window is open. This should only make a difference in GUI emacs, as console emacs can/does not differentiate between "<tab>" and "TAB".

Author: futile

lsp-ui-peek.el

@@ -549,6 +549,7 @@ XREFS is a list of references/definitions."
     (define-key map (kbd "p") 'lsp-ui-peek--select-prev)
     (define-key map (kbd "<up>") 'lsp-ui-peek--select-prev)
     (define-key map (kbd "TAB") 'lsp-ui-peek--toggle-file)
+    (define-key map (kbd "<tab>") 'lsp-ui-peek--toggle-file)
     (define-key map (kbd "q") 'lsp-ui-peek--abort)
     (define-key map (kbd "RET") 'lsp-ui-peek--goto-xref)
     (define-key map (kbd "M-RET") 'lsp-ui-peek--goto-xref-other-window)