diff options
Diffstat (limited to 'lisp/eshell/esh-var.el')
| -rw-r--r-- | lisp/eshell/esh-var.el | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/lisp/eshell/esh-var.el b/lisp/eshell/esh-var.el index 4806041c59e..807a8ecc446 100644 --- a/lisp/eshell/esh-var.el +++ b/lisp/eshell/esh-var.el @@ -86,6 +86,13 @@ ;; Returns the length of the value of $EXPR. This could also be ;; done using the `length' Lisp function. ;; +;; $@EXPR +;; +;; Splices the value of $EXPR in-place into the current list of +;; arguments. This is analogous to the `,@' token in Elisp +;; backquotes, and works as if the user typed '$EXPR[0] $EXPR[1] +;; ... $EXPR[N]'. +;; ;; There are also a few special variables defined by Eshell. '$$' is ;; the value of the last command (t or nil, in the case of an external ;; command). This makes it possible to chain results: @@ -320,10 +327,9 @@ copied (a.k.a. \"exported\") to the environment of created subprocesses." "Parse a variable interpolation. This function is explicit for adding to `eshell-parse-argument-hook'." (when (and (eq (char-after) ?$) - (/= (1+ (point)) (point-max))) + (/= (1+ (point)) (point-max))) (forward-char) - (list 'eshell-escape-arg - (eshell-parse-variable)))) + (eshell-parse-variable))) (defun eshell/define (var-alias definition) "Define a VAR-ALIAS using DEFINITION." @@ -453,6 +459,8 @@ Its purpose is to call `eshell-parse-variable-ref', and then to process any indices that come after the variable reference." (let* ((get-len (when (eq (char-after) ?#) (forward-char) t)) + (splice (when (eq (char-after) ?@) + (forward-char) t)) value indices) (setq value (eshell-parse-variable-ref get-len) indices (and (not (eobp)) @@ -464,7 +472,13 @@ process any indices that come after the variable reference." (when get-len (setq value `(length ,value))) (when eshell-current-quoted - (setq value `(eshell-stringify ,value))) + (if splice + (setq value `(eshell-list-to-string ,value) + splice nil) + (setq value `(eshell-stringify ,value)))) + (setq value `(eshell-escape-arg ,value)) + (when splice + (setq value `(eshell-splice-args ,value))) value)) (defun eshell-parse-variable-ref (&optional modifier-p) @@ -751,12 +765,13 @@ For example, to retrieve the second element of a user's record in (defun eshell-complete-variable-reference () "If there is a variable reference, complete it." - (let ((arg (pcomplete-actual-arg)) index) - (when (setq index - (string-match - (concat "\\$\\(" eshell-variable-name-regexp - "\\)?\\'") arg)) - (setq pcomplete-stub (substring arg (1+ index))) + (let ((arg (pcomplete-actual-arg))) + (when (string-match + (rx "$" (? (or "#" "@")) + (? (group (regexp eshell-variable-name-regexp))) + string-end) + arg) + (setq pcomplete-stub (substring arg (match-beginning 1))) (throw 'pcomplete-completions (eshell-variables-list))))) (defun eshell-variables-list () |