Warum sortiert Fedoras dnf Zeilen nach Länge?

393
vy32

Wenn ich einen Vorgang mache dnf search emacs, scheint die Ausgabe nach Zeilenlänge sortiert zu sein (siehe unten).

Warum?

[dhc-user@server1 timestudy]$ dnf search emacs Last metadata expiration check: 2 days, 8:25:38 ago on Sun May 1 17:14:42 2016. ===================================================== N/S Matched: emacs ===================================================== emacs.x86_64 : GNU Emacs text editor emacs-vm.x86_64 : Emacs VM mail reader ucblogo-emacs.x86_64 : Emacs Logo mode emacs-common.x86_64 : Emacs common files emacspeak.x86_64 : Emacs Speech interface ocaml-emacs.x86_64 : Emacs mode for OCaml emacs-pydb.noarch : Pydb support for Emacs xemacs.i686 : Different version of Emacs xemacs.x86_64 : Different version of Emacs emacs-ledger.x86_64 : Emacs mode for ledger emacs-apel.noarch : A Portable Emacs Library emacs-mew.x86_64 : Email client for GNU Emacs emacs-sdcc.x86_64 : Emacs extensions for SDCC emacs-cdargs.noarch : Cdargs support for Emacs emacs-irsim-mode.noarch : Irsim mode for emacs migemo-emacs.noarch : Emacs front-end of Migemo emacs-lua.noarch : Lua major mode for GNU Emacs Singular-emacs.x86_64 : Emacs mode for Singular cvc3-emacs.noarch : Compiled Emacs mode for CVC3 emacs-filesystem.noarch : Emacs filesystem layout emacs-color-theme.noarch : Color themes for Emacs emacs-pyrex.noarch : Pyrex editing mode for Emacs migemo-xemacs.noarch : XEmacs front-end of Migemo emacs-evil.noarch : Extensible vi layer for Emacs emacs-notmuch.noarch : Not much support for Emacs cvc3-xemacs.noarch : Compiled XEmacs mode for CVC3 emacs-global.noarch : GNU GLOBAL support for Emacs emacs-spice-mode.noarch : SPICE Mode for GNU Emacs emacs-verilog-mode.noarch : Verilog mode for Emacs xemacs-devel.i686 : Development files for XEmacs xemacs-devel.x86_64 : Development files for XEmacs emacs-auctex.noarch : Enhanced TeX modes for Emacs emacs-common-w3m.noarch : W3m interface for Emacsen xemacs-filesystem.noarch : XEmacs filesystem layout emacs-goodies.noarch : Miscellaneous add on for Emacs mona-emacs.noarch : Emacs mode for editing Mona files xemacs-el.x86_64 : Emacs lisp source files for XEmacs why3-emacs.noarch : Emacs support file for why3 files gcl-emacs.noarch : Emacs mode for interacting with GCL undertaker-emacs.noarch : Emacs support for undertaker emacs-ledger-el.noarch : Emacs elisp source for ledger mona-xemacs.noarch : XEmacs mode for editing Mona files why3-xemacs.noarch : XEmacs support file for why3 files emacs-rinari.noarch : Ruby on rails minor mode for Emacs gcl-xemacs.noarch : XEmacs mode for interacting with GCL undertaker-xemacs.noarch : XEmacs support for undertaker emacs-gnu-smalltalk.noarch : Emacs mode for GNU Smalltalk why3-emacs-el.noarch : Emacs source file for why3 support xemacs-pysmell.noarch : Python automcompletion for XEmacs frama-c-emacs.noarch : Emacs support file for ACSL markup emacs-haskell-mode.noarch : Haskell editing mode for Emacs emacs-nox.x86_64 : GNU Emacs text editor without X support emacs-slime-el.noarch : Elisp source files for emacs-slime emacs-pysmell.noarch : Python automcompletion for GNU Emacs frama-c-emacs-el.noarch : Emacs source file for ACSL markup why3-xemacs-el.noarch : XEmacs source file for why3 support xemacs-packages-base.noarch : Base lisp packages for XEmacs frama-c-xemacs.noarch : XEmacs support file for ACSL markup emacs-pymacs.noarch : Emacs and Python integration framework emacs-rinari-el.noarch : Elisp source files for emacs-rinari frama-c-xemacs-el.noarch : XEmacs source file for ACSL markup clips-emacs.noarch : EMACS add-ons for the CLIPS expert system emacs-goodies-el.noarch : Elisp source files for Emacs-goodies emacs-ess-doc.noarch : Documentation of Emacs Speaks Statistics xemacs-info.noarch : XEmacs documentation in GNU texinfo format emacs-mmm-el.noarch : Elisp source files for mmm under GNU Emacs xemacs-ebib-el.noarch : Elisp source files for Ebib under XEmacs emacs-yaml-mode.noarch : Major mode to edit YAML files for emacs cvc3-emacs-el.noarch : Elisp source files for the CVC3 Emacs mode xemacs-packages-extra.noarch : Collection of XEmacs lisp packages emacs-php-mode.noarch : Major GNU Emacs mode for editing PHP code emacs-slime.noarch : The superior lisp interaction mode for emacs emacs-ebib-el.noarch : Elisp source files for Ebib under GNU Emacs emacs-nesc-el.noarch : Elisp source files for nesC under GNU Emacs xemacs-ebib.noarch : Compiled elisp files to run Ebib under XEmacs pinentry-emacs.x86_64 : Passphrase/PIN entry dialog based on emacs cvc3-xemacs-el.noarch : Elisp source files for the CVC3 XEmacs mode emacs-bbdb.noarch : A contact management utility for use with Emacs emacs-htmlize-el.noarch : Emacs Lisp source files for emacs-htmlize emacs-terminal.noarch : A desktop menu item for GNU Emacs terminal. coq-emacs.noarch : GNU Emacs support for Coq proof management system emacs-common-tuareg.noarch : Emacs and XEmacs mode for editing ocaml emacs-ebib.noarch : Compiled elisp files to run Ebib under GNU Emacs emacs-magit-el.noarch : Elisp source files for Magit under GNU Emacs emacs-nesc.noarch : Compiled elisp files to run nesC under GNU Emacs gcl-emacs-el.noarch : Source for Emacs mode for interacting with GCL undertaker-emacs-el.noarch : Source for Emacs support for undertaker xemacs-riece.noarch : Compiled elisp files to run Riece under XEmacs emacs-epix.noarch : Compiled elisp files to run epix under GNU Emacs emacs-erlang-lfe.noarch : Emacs major mode for Lisp Flavoured Erlang emacs-gettext.noarch : Support for editing po files within GNU Emacs emacs-magit.noarch : Emacs interface to the most common Git operations emacs-pymacs-el.noarch : Elisp source files for pymacs under GNU Emacs emacs-riece.noarch : Compiled elisp files to run Riece under GNU Emacs gcl-xemacs-el.noarch : Source for XEmacs mode for interacting with GCL tmda-emacs.noarch : Tagged Message Deliver Agent - Emacs Support Files undertaker-xemacs-el.noarch : Source for XEmacs support for undertaker xemacs-w3m.noarch : Compiled elisp files to run Emacs-w3m Under XEmacs emacs-common-riece.noarch : Yet Another IRC Client for Emacs and XEmacs emacs-ess.noarch : Files to run Emacs Speaks Statistics under GNU Emacs emacs-cdargs-el.noarch : Elisp source files for Cdargs support for Emacs emacs-w3m.noarch : Compiled elisp files to run Emacs-w3m under GNU Emacs xemacs-erlang.noarch : Compiled elisp files for erlang-mode under XEmacs emacs-dinotrace.x86_64 : Elisp source files for dinotrace under GNU Emacs emacs-gnu-smalltalk-el.noarch : ELisp source files for emacs-gnu-smaltalk flim-xemacs.noarch : Basic library for handling email messages for XEmacs xemacs-erlang-el.noarch : Elisp source files for erlang-mode under XEmacs emacs-common-ess.noarch : Emacs Speaks Statistics add-on package for Emacs emacs-erlang.noarch : Compiled elisp files for erlang-mode under GNU Emacs emacs-goto-chg.noarch : Emacs add-on to go to last change in current buffer emacs-lua-el.noarch : Elisp source files for Lua major mode under GNU Emacs protobuf-emacs.x86_64 : Emacs mode for Google Protocol Buffers descriptions python-ropemacs.noarch : Plugin for performing python refactorings in emacs xemacs-tuareg.noarch : Compiled elisp files to run Tuareg-mode under XEmacs emacs-erlang-el.noarch : Elisp source files for erlang-mode under GNU Emacs emacs-global-el.noarch : Elisp source files for GNU GLOBAL support for Emacs emacs-rpm-spec-mode.noarch : Major GNU Emacs mode for editing RPM spec files protobuf-emacs-el.x86_64 : Elisp source files for Google protobuf Emacs mode xemacs-ddskk.noarch : Compiled elisp files to run Daredevil SKK under XEmacs emacs-lookup.noarch : Search Interface with Electronic Dictionaries for Emacs emacs-tuareg.noarch : Compiled elisp files to run Tuareg-mode under GNU Emacs emacs-auto-complete.noarch : Intelligent auto-complete extension for GNU Emacs emacs-ddskk.noarch : Compiled elisp files to run Daredevil SKK under GNU Emacs emacs-irsim-mode-el.noarch : Source files for Emacs-irsim-mode under GNU Emacs emacs-spice-mode-el.noarch : Source files for Emacs-spice-mode under GNU Emacs emacs-vregs-mode.noarch : Elisp source files for systemc-vregs under GNU Emacs xemacs-nox.x86_64 : Different version of Emacs built without X Windows support emacs-systemc-mode.x86_64 : Elisp source files for systemc-mode under GNU Emacs xemacs-xft.x86_64 : Different version of Emacs built with Xft/fontconfig support xemacs-common.x86_64 : Byte-compiled lisp files and other common files for XEmacs emacs-common-ebib.noarch : A BibTeX database manager that runs in Emacs and XEmacs emacs-haskell-mode-el.noarch : Elisp source files for Haskell-mode under GNU Emacs emacs-mmm.noarch : Emacs minor mode allowing different major modes in the same file emacs-proofgeneral-el.noarch : Elisp source files for Proof General under GNU Emacs emacs-proofgeneral.noarch : Compiled elisp files to run Proof General under GNU Emacs emacs-color-theme-el.noarch : Elisp source files for Emacs Color Themes under GNU Emacs xemacs-packages-extra-info.noarch : XEmacs packages documentation in GNU texinfo format xemacs-packages-extra-el.noarch : Emacs lisp source files for XEmacs packages collection emacs-auto-complete-el.noarch : Elisp source files for Auto Complete Mode under GNU Emacs emacs-erlang-lfe-el.noarch : Elisp source files for Lisp Flavoured Erlang under GNU Emacs emacs-common-ddskk.noarch : Daredevil SKK - Simple Kana to Kanji conversion program for Emacs xemacs-packages-base-el.noarch : Emacs lisp source files for the base lisp packages for XEmacs emacs-common-proofgeneral.noarch : Emacs mode for standard interaction interface for proof assistants coq-emacs-el.noarch : Elisp source files for Coq proof management system emacs-gtypist.x86_64 : GNU typing tutor emacs-htmlize.noarch : Convert buffer text and decorations to HTML emacs-undo-tree.noarch : Treats undo history as a tree of changes emacs-auctex-doc.noarch : Documentation in various formats for AUCTeX vile.x86_64 : VI Like Emacs xvile.x86_64 : VI Like Emacs zile.x86_64 : Zile Is Lossy Emacs mg.x86_64 : Tiny Emacs-like editor jove.x86_64 : Jonathan's Own Version of Emacs ctags-etags.x86_64 : Exuberant Ctags for emacs tag format psgml.noarch : GNU Emacs major mode for editing SGML documents flim.noarch : Basic library for handling email messages for Emacs e3.x86_64 : Text editor with key bindings similar to WordStar, Emacs, pico, nedit, or vi [dhc-user@server1 timestudy]$
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1 Antwort auf die Frage

2
Jakuje

Dies scheint nicht nach Länge sortiert zu sein:

emacs-common-proofgeneral.noarch : Emacs mode for standard interaction interface for proof assistants coq-emacs-el.noarch : Elisp source files for Coq proof management system emacs-gtypist.x86_64 : GNU typing tutor

Die Dokumentation sagt das

Das Ergebnis wird nach den relevantesten Ergebnissen sortiert.

das macht Sinn. Dies ist wahrscheinlich ein Nebeneffekt der Relevanz von Algorithmen. Wenn der Relevanzalgorithmus so aussieht:

relevancy = letters_of_found_string / length_of_string_searched_in

dann werden zuerst kürzere Zeichenfolgen angezeigt. Es mag suboptimal sein und seltsam aussehen (wäre nicht das erste, was in DNF möglich wäre), aber die Diskussion auf der Upstream-Mailingliste oder die vorgeschlagene Verbesserung von Github wäre wünschenswert.

Haftungsausschluss: Ich nehme nicht an der DNF-Entwicklung teil und das obige ist die Anwendung des gesunden Menschenverstands und meines Google-Fu.

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