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authorAlex Kost <alezost@gmail.com>2015-12-11 12:36:56 +0300
committerAlex Kost <alezost@gmail.com>2016-01-02 17:25:35 +0300
commitdc690c445e4b483e6ce2a88f6c23dd19685057cc (patch)
treeaa0197892cc941057a87d63d97c6f341db92cdc3 /emacs
parentddf6948b2204fbb453df9bc2ade48454d3d6ee12 (diff)
downloadpatches-dc690c445e4b483e6ce2a88f6c23dd19685057cc.tar
patches-dc690c445e4b483e6ce2a88f6c23dd19685057cc.tar.gz
emacs: Return nil instead of "" in completing readers.
* emacs/guix-utils.el (guix-completing-read): New procedure. (guix-define-readers): Use it.
Diffstat (limited to 'emacs')
-rw-r--r--emacs/guix-utils.el11
1 files changed, 10 insertions, 1 deletions
diff --git a/emacs/guix-utils.el b/emacs/guix-utils.el
index 4f5c69ca4d..98a408f875 100644
--- a/emacs/guix-utils.el
+++ b/emacs/guix-utils.el
@@ -214,6 +214,15 @@ If NO-MESSAGE? is non-nil, do not display a message about it."
See also `guix-copy-as-kill'."
(guix-copy-as-kill (guix-command-string args) no-message?))
+(defun guix-completing-read (prompt table &optional predicate
+ require-match initial-input
+ hist def inherit-input-method)
+ "Same as `completing-read' but return nil instead of an empty string."
+ (let ((res (completing-read prompt table predicate
+ require-match initial-input
+ hist def inherit-input-method)))
+ (unless (string= "" res) res)))
+
(defun guix-completing-read-multiple (prompt table &optional predicate
require-match initial-input
hist def inherit-input-method)
@@ -460,7 +469,7 @@ keywords are available:
`(defvar ,completions-var nil))
,(when single-reader
- `(guix-define-reader ,single-reader completing-read
+ `(guix-define-reader ,single-reader guix-completing-read
,completions ,single-prompt))
,(when multiple-reader