Created
May 4, 2012 06:39
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Checks your vim regexp escapes -- save yourself tons of hassle!
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| command! -range -nargs=* CheckRegexpEscapes :call CheckRegexpEscapes(<f-args>) | |
| " call with either no arguments or a:1 for escape character + | |
| " an argument for each character to be escaped | |
| " e.g. CheckRegexpEscapes('\\','(',')','_') -> | |
| " checks that you put in '\\' behind each of '(',')','_',')' | |
| " and prompts you to change it | |
| " always asks to substitute | |
| function! CheckRegexpEscapes(...) | |
| " NonEscapedCharRegexp: | |
| " takes in an escape character (note: '\' must be inputted as '\\') and | |
| " a character to be checked for an escape and returns a regexp string to do | |
| " so. | |
| " String \1 character preceding char \2 char or regexp string | |
| function! NonEscapedCharRegexp(escape,char) | |
| return '\([^'.a:escape.']\)\{1,1}\('.a:char.'\)' | |
| endfunction | |
| if a:0 <= 0 | |
| let charlist = ['(',')','{','|'] | |
| echo charlist | |
| let escapechar = '\\' | |
| elseif a:0 == 1 | |
| let charlist = ['(',')','{','|'] | |
| let escapechar = a:1 | |
| else | |
| let charlist = a:000 | |
| let escapechar = a:1 | |
| endif | |
| " fix '\' so that it is escaped in the regexp | |
| if escapechar == '\' | |
| let escapechar = '\\' | |
| endif | |
| " set up the pieces, range, end, etc | |
| let rangesearch = ':'.a:firstline.','.a:lastline.'s'.'/' | |
| let endstr = '/\1'.escapechar.'\2/gc' | |
| for i in range(0,len(charlist)-1) | |
| try | |
| let theregexp = rangesearch.NonEscapedCharRegexp(escapechar,charlist[i]).endstr | |
| exe theregexp | |
| " catch pattern not found errors | |
| catch /^Vim\%((\a\+)\)\=:E486/ | |
| echo "no unescaped ".charlist[i]." . Good job!" | |
| endtry | |
| endfor | |
| echo "Phew! Glad that's over!" | |
| endfunction |
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Ironically, I kept screwing up the regexp's for this function as I was writing it. Now that won't be a problem and I'm very happy about it :)