master 3b2b0b5f921 5/8: Fix eshell "ls" command for files larger than 1TiB

[Stefan Kangas]

branch: master
commit 3b2b0b5f921fd49ef0ac21e1522b0e037b80dffa
Author: Stefan Kangas <stefankangas@gmail.com>
Commit: Stefan Kangas <stefankangas@gmail.com>

    Fix eshell "ls" command for files larger than 1TiB
    
    * lisp/eshell/esh-util.el (eshell-printable-size): Fix displaying file
    sizes larger than 1 TiB or 1 TB.
    * test/lisp/eshell/esh-util-tests.el
    (esh-util-test/eshell-printable-size)
    (esh-util-test/eshell-printable-size/zero)
    (esh-util-test/eshell-printable-size/terabyte)
    (esh-util-test/eshell-printable-size/use-colors)
    (esh-util-test/eshell-printable-size/block-size)
    (esh-util-test/eshell-printable-size/human-readable-arg): New tests.
---
 lisp/eshell/esh-util.el            |  8 +++++++-
 test/lisp/eshell/esh-util-tests.el | 31 +++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/lisp/eshell/esh-util.el b/lisp/eshell/esh-util.el
index 1d0f41d7b82..82b0d9fc623 100644
--- a/lisp/eshell/esh-util.el
+++ b/lisp/eshell/esh-util.el
@@ -433,6 +433,10 @@ Prepend remote identification of `default-directory', if 
any."
 (defun eshell-printable-size (filesize &optional human-readable
                                       block-size use-colors)
   "Return a printable FILESIZE."
+  (when (and human-readable
+             (not (= human-readable 1000))
+             (not (= human-readable 1024)))
+    (error "human-readable must be 1000 or 1024"))
   (let ((size (float (or filesize 0))))
     (if human-readable
        (if (< size human-readable)
@@ -463,7 +467,9 @@ Prepend remote identification of `default-directory', if 
any."
                    (if use-colors
                        (put-text-property 0 (length str)
                                           'face 'bold-italic str))
-                   str)))))
+                    str)
+                (let ((flavor (and (= human-readable 1000) 'si)))
+                  (file-size-human-readable filesize flavor))))))
       (if block-size
          (setq size (/ size block-size)))
       (format "%.0f" size))))
diff --git a/test/lisp/eshell/esh-util-tests.el 
b/test/lisp/eshell/esh-util-tests.el
index 8585677e14e..fe4eb9f31dd 100644
--- a/test/lisp/eshell/esh-util-tests.el
+++ b/test/lisp/eshell/esh-util-tests.el
@@ -125,4 +125,35 @@
     (should (equal (eshell-convert-to-number "123") "123"))
     (should (equal (eshell-convert-to-number "1.23") "1.23"))))
 
+(ert-deftest esh-util-test/eshell-printable-size ()
+  (should (equal (eshell-printable-size (expt 2 16)) "65536"))
+  (should (equal (eshell-printable-size (expt 2 32)) "4294967296")))
+
+(ert-deftest esh-util-test/eshell-printable-size/zero ()
+  (should (equal (eshell-printable-size 0 1000 nil t) "0")))
+
+(ert-deftest esh-util-test/eshell-printable-size/terabyte ()
+  (should (equal (eshell-printable-size (1- (expt 2 40)) 1024 nil t) "1024G"))
+  (should (equal (eshell-printable-size (expt 2 40) 1024 nil t) "1T"))
+  (should (equal (eshell-printable-size (1- (expt 10 12)) 1000 nil t) "1000G"))
+  (should (equal (eshell-printable-size (expt 10 12) 1000 nil t) "1T")))
+
+(ert-deftest esh-util-test/eshell-printable-size/use-colors ()
+  (should (equal-including-properties
+           (eshell-printable-size (1- (expt 2 20)) 1024 nil t)
+           "1024k"))
+  (should (equal-including-properties
+           (eshell-printable-size (1- (expt 2 30)) 1024 nil t)
+           (propertize "1024M" 'face 'bold)))
+  (should (equal-including-properties
+           (eshell-printable-size (1- (expt 2 40)) 1024 nil t)
+           (propertize "1024G" 'face 'bold-italic))))
+
+(ert-deftest esh-util-test/eshell-printable-size/block-size ()
+  (should (equal (eshell-printable-size (1- (expt 2 20)) nil 4096) "256"))
+  (should (equal (eshell-printable-size (1- (expt 2 30)) nil 4096) "262144")))
+
+(ert-deftest esh-util-test/eshell-printable-size/human-readable-arg ()
+  (should-error (eshell-printable-size 0 999 nil t)))
+
 ;;; esh-util-tests.el ends here