---- On Wed, 12 Sep 2018 13:07:36 +0200 luigi scarso wrote ----

On Wed, Sep 12, 2018 at 12:16 PM Marcel Krüger wrote: Hi,

I noticed two problems with the mplib `get_...` family of functions:

- First there seems to be a LuaTeX specific documentation bug: In the LuaTeX manual these functions are listed as `getboolean`, `getnumeric`, `getstring`and `getpath`, but in the actual implementation the names contain a underscore.

- If `get_numeric` is called while two nested loops are in effect in MetaPost, an endless loop is triggered when MetaPost tries to iterate through the current loops.

I attached a patch fixing both problems. The second point also applies to the standalone mplib.

Thank you for the patches.Do you have an example where the get_numeric fails ? --

A plain LuaTeX example: \directlua{ local mp mp = mplib.new{ extensions = 1, run_script = function(script) print('The value:', mp:get_numeric'mynumeric') return "" end } mp:execute[[ mynumeric = 1; myother = for i=1,2: for j=1,2: i+j+runscript"something" endfor endfor 1; ]] } \bye This prints `The value: 1.0` with the patch and freezes without it. Best regards Marcel

On Wed, Sep 12, 2018 at 1:51 PM luigi scarso wrote:

On Wed, Sep 12, 2018 at 1:38 PM Marcel Krüger wrote:

...

---- On Wed, 12 Sep 2018 13:07:36 +0200 luigi scarso < luigi.scarso@gmail.com> wrote ----

...

On Wed, Sep 12, 2018 at 12:16 PM Marcel Krüger

wrote:

...

Hi,

I noticed two problems with the mplib `get_...` family of functions:

- First there seems to be a LuaTeX specific documentation bug: In the LuaTeX manual these functions are listed as `getboolean`, `getnumeric`, `getstring`and `getpath`, but in the actual implementation the names contain a underscore.

- If `get_numeric` is called while two nested loops are in effect in MetaPost, an endless loop is triggered when MetaPost tries to iterate through the current loops.

I attached a patch fixing both problems. The second point also applies to the standalone mplib.

Thank you for the patches.Do you have an example where the get_numeric fails ? --

A plain LuaTeX example:

\directlua{ local mp mp = mplib.new{ extensions = 1, run_script = function(script) print('The value:', mp:get_numeric'mynumeric') return "" end } mp:execute[[ mynumeric = 1; myother = for i=1,2: for j=1,2: i+j+runscript"something" endfor endfor 1; ]] } \bye

This prints `The value: 1.0` with the patch and freezes without it.

Best regards Marcel

OK, thank you very much.

-- luigi

patched applied -- revision 6978. -- luigi