Add g flag to pattern string by default

[azu]

Should we add g flag to pattern string?

For example, following pattern string is treaded /#.*{#[a-z.-]+}/ .
As a result, this pattern match only first item({#first}).
By constrast it does not match second item({#second})

pattern:

"/#.*{#[a-z.-]+}/"

text:

# First {#first}

# Second {#second}

Current behavior confuse user, I think.

[azu]

If pass /pattern/, add g flag to the pattern automatically.
If pass /pattern/g, do noting.