coding Emacs Lisp

How to determine if current buffer is tramp buffer in Emacs

Tramp is Emacs’ way to access remote files, e.g. via SSH. To determine if the current buffer is accessing a tramp file (e.g. to not try to run gtags or similar), try this:

(not (tramp-tramp-file-p (buffer-file-name (current-buffer))))
bash scripting UNIX

Quoting a set of parameters for program arguments using sed

I have a script which launches another program. That program takes some command line arguments, which in turn can have parameters. Those parameters may include “;”, which has a special meaning in the Bash. To quote these, you can use the following sed command:

$ echo "foo --bar=1 --baz=2" | sed -e 's/(--[^[:space:]]*=)([^[:space:]]*)/1"2"/g'
foo --bar="1" --baz="2"