3

Tried

:s/\\\/\\/g

but VIM will search for \\/\ instead.

So is there any way I can do this in Vim?

2
  • 5
    :%s/\\\\/\\/g double them up, eh?
    – wbogacz
    May 10, 2019 at 1:55
  • 1
    When working with \ or /, I often use # as a delimiter for the substitute command because this is more easy to grasp visually (I feel), i.e. :s#\\\\#\\#g
    – Rolf
    May 29, 2019 at 6:26

2 Answers 2

5

In s/\\\/\\/:

  1. the first \ escapes the second \;
  2. the second \ is escaped, so it's no longer special; and
  3. the third \ isn't escaped, so it escapes the / after it.

So you need to escape the third \ like the second was:

:s/\\\\/\\/g
3
  • thanks!! It worked. but in '\\\\/', why the 4th '\' isn't escaped by the 1st '\' like the 2nd and the 3rd one? in vim, how many character will be escaped by '\' exactly?
    – Teddy C
    May 10, 2019 at 8:03
  • 1
    Usually, \ escapes the next character, unless it is itself escaped by a \ . There are a lot of exceptions. See :h pattern-atoms for some of those
    – muru
    May 10, 2019 at 9:04
  • 1
    @TeddyC The 3rd \ isn't escaped by the 1st. The 2nd is escaped by the 1st and the 4th is escaped by the 3rd.
    – Rich
    May 10, 2019 at 14:55
1
:1,$:s/\\\\/\\/g

1 means the first line and $ means till the last one. each \\ means \, and \/ removes the / as divider, here you have your syntax error.

3
  • 1
    :%s/from/to/g may be better. % means all lines in the file
    – Teddy C
    May 12, 2019 at 2:48
  • 2
    What OP posted isn't a syntax error though. :s/\\\/\\/g uses \\\/\\ as the pattern and g as the replacement. (A trailing / is implied.)
    – muru
    May 13, 2019 at 5:23
  • @muru I thought that the trailing / was mandatory. May 13, 2019 at 15:31

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