When you pipe the output, ls acts differently.
This fact is hidden away in the info documentation:
If standard output is a terminal, the output is in columns (sorted vertically) and control characters are output as question marks; otherwise, the output is listed one per line and control characters are output as-is.
To prove it, try running
ls
and then
ls | less
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moving:
to the end of the command: ctrl-e
to the begin of the command: ctrl-a
forward a word: alt-f
backword a word: alt-b
deleting:
from current cursor position to the end of word: ald-d
from current cursor position to the begin of word: clt-w
International Journal of Instrumentation and Control Systems (IJICS) is a Quarterly open access peer-reviewed journal that publishes articles which contribute new results in all areas of Instrumentation Engineering and Control Systems. The journal focuses on all technical and practical aspects of Instrumentation Engineering and Control Systems. The goal of this journal is to bring together researchers and practitioners from academia and industry to focus on advanced instrumentation engineering, control systems and automation concepts and establishing new collaborations in these areas. Authors are solicited to contribute to this journal by submitting articles that illustrate research results, projects, surveying works and industrial experiences that describe significant advances in the Instrumentation Engineering
N. Beetz, M. Harrison, M. Brede, X. Zong, M. Urbanski, A. Sietmann, J. Kaufling, M. Barrot, M. Seeliger, M. Vieira-Coelho und 15 andere Autor(en). J Clin Invest, 119 (12):
3597-3612(Dezember 2009)Beetz, Nadine Harrison, Michael D Brede, Marc Zong, Xiangang Urbanski,
Michal J Sietmann, Anika Kaufling, Jennifer Barrot, Michel Seeliger,
Mathias W Vieira-Coelho, Maria Augusta Hamet, Pavel Gaudet, Daniel
Seda, Ondrej Tremblay, Johanne Kotchen, Theodore A Kaldunski, Mary
Nusing, Rolf Szabo, Bela Jacob, Howard J Cowley, Allen W Jr Biel,
Martin Stoll, Monika Lohse, Martin J Broeckel, Ulrich Hein, Lutz
HL082798/HL/NHLBI NIH HHS/United States In Vitro Research Support,
N.I.H., Extramural Research Support, Non-U.S. Gov't United States
The Journal of clinical investigation J Clin Invest. 2009 Dec;119(12):3597-3612..