bug#27813: grep bug

[Paul Eggert]

Micah wrote:
> File X contains a line with:
>
> #else
>
> Grepping:
>
> case 1: 'grep -Ew -e "#else" X' returns "0":
> #else
>
> case 2: 'grep -E -e "\<#else\>" X' returns "1":

Although grep is operating as documented here, the documentation could be 
better. I installed the attached patch to try to clear things up. Thanks for 
reporting the problem.

0001-doc-distinguish-w-from.patch
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