whitespace rules for st4?

[Colin Fraizer]

Is there a place in the documentation where all the whitespace rules are explained? (I use '$' for both delimiters throughout.)

It seems like the expansion of

```

foo() ::= <<

A

>>

```

and

```

foo() ::= <<

A>>

```

are equivalent to

```

foo()::= <<A>>

```

So, it appears the rule is:

newlines are ignored immediately after '<<' and immediately before '>>' and immediately after $endif$ (or <endif> or whatever. YDMV.)

Are those the only places where newlines are treated specially (besides the obvious <% %>)?

```

foo() ::= <<

$if (true)$A

$else$B

$endif$C

>>

bar() ::= <<

$if (true)$A

$else$B

$endif$

>>

baz() ::= <<

$if (true)$A

$else$B

$endif$

C

>>

quux() ::= <<

$if (true)$A

$else$B

$endif$C>>

quuux() ::= <<$if (true)$A

$else$B

$endif$C

>>

quuuux() ::= <<

$if (true)$$\\$

A

$else$$\\$

B

$endif$C

>>

quuuuux() ::= <<

$if (true)$$\\$

A$\\$

$else$$\\$

B$\\$

$endif$C

>>

quuuuuux() ::= <<

$if (true)$$\\$

A$\\$

$else$$\\$

B$\\$

$endif$

C

>>

my_test() ::= <<

<!-- Test foo -->$foo()$<!-- EndTest -->

<!-- Test bar -->$bar()$<!-- EndTest -->

<!-- Test baz -->$baz()$<!-- EndTest -->

<!-- Test quux -->$quux()$<!-- EndTest -->

<!-- Test quuux -->$quuux()$<!-- EndTest -->

<!-- Test quuuux -->$quuuux()$<!-- EndTest -->

<!-- Test quuuuux -->$quuuuux()$<!-- EndTest -->

<!-- Test quuuuuux -->$quuuuux()$<!-- EndTest -->

>>

```

my_test expands to

```

        <!-- Test foo -->A

        C<!-- EndTest -->

        <!-- Test bar -->A

        <!-- EndTest -->

        <!-- Test baz -->A

        C<!-- EndTest -->

        <!-- Test quux -->A

        C<!-- EndTest -->

        <!-- Test quuux -->A

        C<!-- EndTest -->

        <!-- Test quuuux -->A

        C<!-- EndTest -->

        <!-- Test quuuuux -->AC<!-- EndTest -->

        <!-- Test quuuuuux -->AC<!-- EndTest -->

```

[Terence Parr]

Hi. Yeah,  There is no obvious place in the documentation that explains all the rules for white space. Sorry. <<...>> does strip 1 \n before and after. We tried to make everything work fairly naturally. some of it is trial and error

Ter

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