Emacs highlighting part of lines that go over 80 chars

How to make Emacs highlighting part of lines that go over 80 chars? I use the whitespace mode: ;; `lines-tail`, highlight the part that goes beyond the ;; limit of `whitespace-line-column` (require ‘whitespace) (setq whitespace-style ‘(face empty tabs lines-tail trailing)) (global-whitespace-mode t) More: https://github.com/zma/emacs-config/blob/master/.emacs Answered by Eric Z Ma. Alternatively, you can run highlight-lines-matching-regexp with […]

How to sort a file by hexadecimal numbers on Linux using sort command?

The sort command has a -n option to sort a file by numbers. However, it does not work with hexadecimal numbers. For example, this file: 400000000 __crt0 400000039 __newr0 400001B14 get_my_task_id 400001C14 get_new_task_id 400001582 input_char 40000166E input_q 400001A5D input_q_exit 400002002 main 4000000DB output_char 400001134 output_char_str 40000100C output_id 40000018F output_q 400000614 output_q_digits 400000B7E output_q_hex 400000D3E output_q_hex_j1 […]

How to rearrange Alt, Ctrl and Win keys on Linux: Win as Alt and Ctrl/Alt as Ctrl

How to rearrange Alt, Ctrl and Win keys on Linux: Win as Alt and Ctrl/Alt as Ctrl? On Linux, the Win key is seldom used. Mapping the Alt keys which are close to my thumb is damn convenient for Emacs users. Hence, the keyboard at the bottom line would look like: ———————————————————— |Ctrl|Alt|Ctrl| Space Bar […]

How to print a plain text file to printers from a terminal in Linux

How to quickly print a plain text file to printers from a terminal in Linux? You can also use enscript: enscript – convert text files to PostScript, HTML, RTF, ANSI, and overstrikes http://www.pkill.info/linux/man/1-enscript/ enscript text-file Answered by Eric Z Ma. The lp command can print a plain text file to a printer. My favorite command: […]

Ghostscript reports “Unrecoverable error: stackunderflow in .setdistillerparams”

With the command -dPDFSETTINGS=/print for ps2pdf, I got: GPL Ghostscript 9.10: Set UseCIEColor for UseDeviceIndependentColor to work properly. Unrecoverable error: stackunderflow in .setdistillerparams make: *** [pdf-print] Error 255 How to fix it? I use this workaround: ps2pdf -dColorConversionStrategy=/LeaveColorUnchanged -dPDFSETTINGS=/printer psfile.ps from this. An alternative is to use -dPDFSETTINGS=/prepress. Answered by Eric Z Ma.