[elpa] master d8172a0 40/90: ivy.el (ivy--regex-fuzzy): Improve for "^" and "$"

[Oleh Krehel]

branch: master
commit d8172a00fdf35aae5023ceb449523a31a7809749
Author: Oleh Krehel <address@hidden>
Commit: Oleh Krehel <address@hidden>

    ivy.el (ivy--regex-fuzzy): Improve for "^" and "$"
    
    * ivy.el (ivy--regex-fuzzy): Don't insert .* after ^ and before $.
    
    * ivy-test.el (ivy--regex-fuzzy): Add test.
    
    Fixes #139
---
 ivy-test.el |   14 ++++++++++++++
 ivy.el      |    6 +++++-
 2 files changed, 19 insertions(+), 1 deletions(-)

diff --git a/ivy-test.el b/ivy-test.el
index 91e0dc3..1062cd8 100644
--- a/ivy-test.el
+++ b/ivy-test.el
@@ -81,3 +81,17 @@
                  '("We're all Britons"
                   "and  I  am"
                    "your  king."))))
+
+(ert-deftest ivy--regex-fuzzy ()
+  (should (string= (ivy--regex-fuzzy "tmux")
+                   "t.*m.*u.*x"))
+  (should (string= (ivy--regex-fuzzy "^tmux")
+                   "^t.*m.*u.*x"))
+  (should (string= (ivy--regex-fuzzy "^tmux$")
+                   "^t.*m.*u.*x$"))
+  (should (string= (ivy--regex-fuzzy "")
+                   ""))
+  (should (string= (ivy--regex-fuzzy "^")
+                   "^"))
+  (should (string= (ivy--regex-fuzzy "$")
+                   "$")))
diff --git a/ivy.el b/ivy.el
index e002e64..07ad9bf 100644
--- a/ivy.el
+++ b/ivy.el
@@ -966,7 +966,11 @@ Everything after \"!\" should not match."
 (defun ivy--regex-fuzzy (str)
   "Build a regex sequence from STR.
 Insert .* between each char."
-  (mapconcat #'string (string-to-list str) ".*"))
+  (if (string-match "\\`\\(\\^?\\)\\(.*?\\)\\(\\$?\\)\\'" str)
+      (concat (match-string 1 str)
+              (mapconcat #'string (string-to-list (match-string 2 str)) ".*")
+              (match-string 3 str))
+    str))
 
 ;;** Rest
 (defun ivy--minibuffer-setup ()