On Sunday, August 5, 2012 10:02:13 PM UTC-5, ping wrote:
> experts:
>
> how to comment a long regex?
>
> it looks normal line continuation doesn't work here -- I have to put
>
> everything in one line, which becomes painful as it goes long...
>
>
>
> syn region erxLog
>
> \start=/^\(\S\S\+.\{0,45}\S[#>%]\s*\S\+\|slot
>
> \d\d\=->\S\+\|->.\+\|\*-\*-\*-\*-\*-\)/
>
> \end=/^\(\S\+.\{0,45}\S[#>%]\|^[#>%]$\|->\|slot
>
> \d\d\=->\|\*-\*-\*-\*-\*-\)/me=s-1 fold
>
The only way I know of is to build a string and then use :exe on the string
rather than giving the command directly, e.g.
let pattern='apples' " apples are healthy
let pattern.='\|bananas' " and bananas are delicious
exec 'syn match ILikeToEat /'.pattern.'/'
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