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Re: Speedup of display of long and truncated lines

From: Gregory Heytings
Subject: Re: Speedup of display of long and truncated lines
Date: Sat, 13 Aug 2022 15:52:56 +0000

I didn't yet look at C-v/M-v, mainly because I don't have examples of files with long lines that have enough long lines to justify movement by window-full. (I could, of course, produce such files myself, but the question is: do such files exist in Real Life, enough to make the scrolling commands important in these cases? Examples of such files, if they exist, are welcome.)

Yes, such files exist in Real Life. An example are database dumps, in which you can have hundreds of very long lines.

Thanks, I'd appreciate any pointers to where I could download examples of such files.

I cannot share such an example myself alas, the real-life databases I have access to contain business-sensitive data. But you can easily create a similar file with the following script. Its two parameters are the number of tables in the database and the number of elements in each table. 100 and 10000 are a good starting point (for what is still a small database).

for i in $(seq 1 $1)
  for j in $(seq 1 $2)
    echo -n "(10,'100','QWERTY','Foo Bar Baz',50,4852,$j)"
    (($j == $2)) && echo -n ';' || echo -n ','

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