I encountered an oddity when trying to use the substitute() function to
prepend '# ' to the start of every line returned from a command.
A very simplified example:
I might expect
:echo substitute("a\na",'^','b','g')
to echo "ba\na"
But, why does
:echo substitute("a\na",'\_^','b','g')
also echo "ba\na" -- instead of "ba\nba"?
In the end, my ugly workaround was to use:
join(map(split(system(...),"\n"),'substitute(v:val,x,y,z)'),"\n")
where I wanted just:
substitute(system(...),x,y,z)
--
Best,
Ben
For anyone reaaally curious, I was wrapping a git log command from
within a gitrebase buffer (and could more-than-probably stand to put it
in a function):
:%s/^pick \(\S\+\) .*$/\=join([submatch(0)] + [ "# {{{1" ] +
map(split(system('git log -p
'.submatch(1).'~1..'.submatch(1)),"\n"),'substitute(substitute(v:val,"\r","","g"),"^","#
","g")') + [ "# }}}1" ],"\n")/
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