diff options
| -rw-r--r-- | guix/utils.scm | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/guix/utils.scm b/guix/utils.scm index cba6464523..a0ca9b9070 100644 --- a/guix/utils.scm +++ b/guix/utils.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2012-2022 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2013, 2014, 2015 Mark H Weaver <mhw@netris.org> ;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org> ;;; Copyright © 2014 Ian Denhardt <ian@zenhack.net> @@ -454,27 +454,27 @@ This procedure returns #t on success." (str (iconv:bytevector->string (get-bytevector-n in (- end start)) (port-encoding in))) - (post-bv (get-bytevector-all in)) (str* (proc str))) ;; Modify FILE only if there are changes. (unless (string=? str* str) ;; Verify the edited expression is still a scheme expression. (call-with-input-string str* read) - ;; Update the file with edited expression. - (with-atomic-file-output file - (lambda (out) - (put-bytevector out pre-bv) - (display str* out) - ;; post-bv maybe the end-of-file object. - (when (not (eof-object? post-bv)) - (put-bytevector out post-bv)) - #t)) - - ;; Due to 'with-atomic-file-output', IN and FILE no longer share - ;; the same inode, but we can reassign the source map up to LINE - ;; to the new file. - (move-source-location-map! (stat in) (stat file) - (+ 1 line))))))))) + + (let ((post-bv (get-bytevector-all in))) + ;; Update the file with edited expression. + (with-atomic-file-output file + (lambda (out) + (put-bytevector out pre-bv) + (display str* out) + (unless (eof-object? post-bv) + ;; Copy everything that came after STR. + (put-bytevector out post-bv)))) + + ;; Due to 'with-atomic-file-output', IN and FILE no longer + ;; share the same inode, but we can reassign the source map up + ;; to LINE to the new file. + (move-source-location-map! (stat in) (stat file) + (+ 1 line)))))))))) ;;; |