It appears from the :help while documentation that :
NOTE: The ":append" and ":insert" commands don't work
properly inside a ":while" and ":for" loop.
And I can confirm they don't. But what should I use then to insert text from inside a loop?
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1What are you trying to do? But it soundalike you could just build the whole string up in a variable and then insert the contents of that variable.FDinoff– FDinoff2015-02-14 01:34:12 +00:00Commented Feb 14, 2015 at 1:34
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1Have you tried setline() function? This should be working if you just want to insert text into a buffer even in while loop I think. Otherwise, you may buffer text in while loop, then insert them after the loop.Tacahiroy– Tacahiroy2015-02-14 03:40:06 +00:00Commented Feb 14, 2015 at 3:40
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@FDinoff I've just wrote a function that can help me navigate from one argument to another inside a headed expression, and I would like to reuse it in reorganizing arguments of a long expression on several lines. I think that working on the whole string in a variable is the right solution indeed. Thanks! :)iago-lito– iago-lito2015-02-14 14:35:59 +00:00Commented Feb 14, 2015 at 14:35
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@Tacahiroy Yeah, I think you're both right, don't hesitate to post an answer. :)iago-lito– iago-lito2015-02-14 14:37:05 +00:00Commented Feb 14, 2015 at 14:37
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1 Answer
The :insert and :append commands are mostly meant for interactive use. In a Vimscript, you can instead use the lower-level setline() and append() functions, which do work well in a loop. (They are also easier to use, because you can directly pass a List of lines to them.)
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iago-lito
This did the trick, and also changed my vimscripting philosophy: thank you! ^ ^