[elpa] externals/substitute c6fb22fe78 1/3: Enable empty string substitution

[ELPA Syncer]

branch: externals/substitute
commit c6fb22fe78017c0cb84ac522512b9a891a4e5751
Author: Protesilaos Stavrou <info@protesilaos.com>
Commit: Protesilaos Stavrou <info@protesilaos.com>

    Enable empty string substitution
    
    We could not do that with 'read-string' as the empty input is
    automatically interpreted as the value of the DEFAULT-VALUE argument.
    This is standard for most Emacs minibuffer interactions, though in our
    case it makes sense to accept an empty string, as we may, e.g., want
    to remove a prefix from a target.
    
    Thanks to Kostas Andreadis for discussing this with me in issue 2 on
    the GitHub mirror as well as pull request 3:
    
    - <https://github.com/protesilaos/substitute/issues/2>
    - <https://github.com/protesilaos/substitute/pull/3>
---
 substitute.el | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/substitute.el b/substitute.el
index 90d332f5bc..04ebc85049 100644
--- a/substitute.el
+++ b/substitute.el
@@ -113,11 +113,11 @@ and related."
   "Prompt for string while referencing TARGET and SCOPE."
   (let ((pretty-target (substitute--prettify-target-description target)))
     (substitute--collect-targets target scope)
-    (read-string
+    (read-from-minibuffer
      (format "Substitute `%s' %s with: "
              (propertize pretty-target 'face 'error)
              (substitute--scope-description scope))
-     nil
+     nil nil nil
      'substitute--history
      pretty-target)))