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-rw-r--r--guix/progress.scm3
1 files changed, 2 insertions, 1 deletions
diff --git a/guix/progress.scm b/guix/progress.scm
index 1993c74030..ba7944214b 100644
--- a/guix/progress.scm
+++ b/guix/progress.scm
@@ -146,7 +146,8 @@ INTERVAL (a time-duration object), otherwise does nothing and returns #f."
(define* (progress-bar % #:optional (bar-width 20))
"Return % as a string representing an ASCII-art progress bar. The total
width of the bar is BAR-WIDTH."
- (let* ((fraction (/ % 100))
+ (let* ((bar-width (max 3 (- bar-width 2)))
+ (fraction (/ % 100))
(filled (inexact->exact (floor (* fraction bar-width))))
(empty (- bar-width filled)))
(format #f "[~a~a]"