vim: cleaning up mixed indents

Thanks to the wiki for this.  If you run across a file that mixes tabs and spaces (ewww!), set the tab settings the way you want (e.g., ts=4 sts=4 sw=4 et ai) and run

:retab

to convert all the tabs to the right number of spaces.  This takes tab stops into account, which :%s/^I/    /g won’t.

This replaces what I used to do, which was /^I s<Tab><Esc> followed by a whole lot of n.n.n.n.n.n.n.n. … .  One command is much better 🙂 .  I’m not even going to try to count the keystroke savings on my current project (pym, a preprocessor written in Python).

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Vim: joining lines having continuation markers

This handy file-renaming script at Perl Monks has source code with red “+” marks marking wrapped lines. I pasted it into Vim and wanted to wrap those lines back to the way they should be. After a bit of fiddling, I got:

:g/^+/execute "norm 0x" | .-1,.j!

The `g/^+/’ finds the lines beginning with a “+”. Then the `execute “norm 0x”‘ deletes the “+” (“0” moves to beginning of line; “x” deletes), “|” marks the next command, and `.-1,.j!’ joins (“j”) the current line (“.”) with the previous line (“.-1”) without whitespace (“!”) added between the lines.

I leave it to you whether I have too much time on my hands.