[Bug]: lsd has a different pipe behavior from ls

[cole-maxwell1]

Version

• latest

version

lsd 1.1.2

What OS are you seeing the problem on?

No response

installation

cargo

term

xterm-256color

ls-colors

rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:.tar=01;31:.tgz=01;31:.arc=01;31:.arj=01;31:.taz=01;31:.lha=01;31:.lz4=01;31:.lzh=01;31:.lzma=01;31:.tlz=01;31:.txz=01;31:.tzo=01;31:.t7z=01;31:.zip=01;31:.z=01;31:.dz=01;31:.gz=01;31:.lrz=01;31:.lz=01;31:.lzo=01;31:.xz=01;31:.zst=01;31:.tzst=01;31:.bz2=01;31:.bz=01;31:.tbz=01;31:.tbz2=01;31:.tz=01;31:.deb=01;31:.rpm=01;31:.jar=01;31:.war=01;31:.ear=01;31:.sar=01;31:.rar=01;31:.alz=01;31:.ace=01;31:.zoo=01;31:.cpio=01;31:.7z=01;31:.rz=01;31:.cab=01;31:.wim=01;31:.swm=01;31:.dwm=01;31:.esd=01;31:.jpg=01;35:.jpeg=01;35:.mjpg=01;35:.mjpeg=01;35:.gif=01;35:.bmp=01;35:.pbm=01;35:.pgm=01;35:.ppm=01;35:.tga=01;35:.xbm=01;35:.xpm=01;35:.tif=01;35:.tiff=01;35:.png=01;35:.svg=01;35:.svgz=01;35:.mng=01;35:.pcx=01;35:.mov=01;35:.mpg=01;35:.mpeg=01;35:.m2v=01;35:.mkv=01;35:.webm=01;35:.webp=01;35:.ogm=01;35:.mp4=01;35:.m4v=01;35:.mp4v=01;35:.vob=01;35:.qt=01;35:.nuv=01;35:.wmv=01;35:.asf=01;35:.rm=01;35:.rmvb=01;35:.flc=01;35:.avi=01;35:.fli=01;35:.flv=01;35:.gl=01;35:.dl=01;35:.xcf=01;35:.xwd=01;35:.yuv=01;35:.cgm=01;35:.emf=01;35:.ogv=01;35:.ogx=01;35:.aac=00;36:.au=00;36:.flac=00;36:.m4a=00;36:.mid=00;36:.midi=00;36:.mka=00;36:.mp3=00;36:.mpc=00;36:.ogg=00;36:.ra=00;36:.wav=00;36:.oga=00;36:.opus=00;36:.spx=00;36:.xspf=00;36:

What happened?

lsd has a different pipe behavior from ls.

$ lsd ~/neovim
 BACKERS.md    cmake          cmake.packaging     contrib           MAINTAIN.md   runtime  󱧼 src
 BSDmakefile   cmake.config   CMakeLists.txt      CONTRIBUTING.md   Makefile      scripts   test
 build         cmake.deps     CMakePresets.json   LICENSE.txt       README.md     snap

$ ls ~/neovim | wc -l
20

$ lsd ~/neovim | wc -l
3

What's expected?

GNU ls can determine if it is outputting to a terminal or not and will behave like ls -1 when piped. When piped lsd should replicate GNU ls behavior by acting like lsd -1.

Expected output:

$ ls ~/neovim | wc -l
20

$ lsd ~/neovim | wc -l
20

What else?

I have found that this ls pipe behavior isn't well documented in the Linux man-pages (from what I have found online and a few personal machines). Check out the -1 docs from freeBSD.

I discovered this when I needed to count the number of files in a flat directory and noticed something was off when I did this with lsd. I guess this subtle behavior is something I have depended on for many years, but I never really knew this was happening in the background.

[hanjianwei]

This bug is particularly frustrating. Even the --classic option doesn't resolve it.

[touero]

I don’t know why lsd -t combined with | can produce different results with ls, so can I simply think that alias ls='lsd' is not true?