On 11/03/11 10:36, Jose Caballero wrote:
for our current python project, we are trying to follow the PEP
recommendations, and therefore keeping all indentations to 4 white spaces.
However, when I am writing code, I feel more comfortable with 8 white
spaces.
I am pretty sure there must be a trick to put on .vimrc (or similar) in
such a way the indents are expanded dynamically when I open a file, but
they are reduced to 4 again when I leave ( ':q' or ':wq' )
In this way the file on disk keeps having 4, but I see 8 when editing code.
The only problem is that I don't know the keywords to search on google
myself... If someone can provide for the keywords I can google it myself.
My guess is that you want a pair of autocmds
:help :autocmd
that trigger on BufWritePre and BufWritePost, something like
(untested)
autocmd BufWritePre *.py %s/^\(
\{8}\)\+/\=substitute(submatch(0), repeat(' ', 8), repeat(' ',
4), 'g')
autocmd BufWritePost *.py %s/^\(
\{4}\)\+/\=substitute(submatch(0), repeat(' ', 4), repeat(' ',
8), 'g')
The first one triggers before the file is written, searches for
multiples of 8 spaces at the beginning of the line and replaces
them with the corresponding number of 4-space instances. The
second one triggers after you've written the file and internally
restores the 8-space leading. The 2nd one might be simply
replaced with
autocmd BufWritePre *.py u
which might undo the conversion to 4-space indentation a lot more
cleanly. Test first :)
For more info, read up at
:help BufWritePre
:h BufWritePost
:h sub-replace-special
:help :u
-tim
PS: it's interesting seeing it from your side where you want
*more* leading whitespace. I tend to do my throw-away python
with 2-space indentation, or with hard-tab characters that I then
change 'ts'/'sw' to display in accordance with my mood.
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