error in mtxrun.lua line 4548 in August 24th update

error in mtxrun.lua line 4548 in August 24th update

[mf via ntg-context]

Hello,
here's the error I get:

lua error : function call: 
...si/context/lmtx-latest/tex/texmf-linux-64/bin/mtxrun.lua:4548: bad 
argument #2 to 'lpegmatch' (string expected, got nil)

BTW I was trying to compile lowlevel-expansion.tex in

tex/texmf-context/doc/context/sources/general/manuals/lowlevel

after I've seen (looking at the diffs in the git repo) there were some 
updates in the manual.

Massi
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Re: error in mtxrun.lua line 4548 in August 24th update

[Hans Hagen via ntg-context]

On 8/25/2021 11:18 AM, mf via ntg-context wrote:
> Hello,
> here's the error I get:
> 
> lua error : function call: 
> ...si/context/lmtx-latest/tex/texmf-linux-64/bin/mtxrun.lua:4548: bad 
> argument #2 to 'lpegmatch' (string expected, got nil)
> 
> BTW I was trying to compile lowlevel-expansion.tex in
> 
> tex/texmf-context/doc/context/sources/general/manuals/lowlevel
> 
> after I've seen (looking at the diffs in the git repo) there were some 
> updates in the manual.
It works here ... can you try with the top line removed? Otherwise we 
need to zoom in on where it fails (some path split issue).

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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Re: error in mtxrun.lua line 4548 in August 24th update

[mf via ntg-context]

Il 25/08/21 13:06, Hans Hagen ha scritto:
> On 8/25/2021 11:18 AM, mf via ntg-context wrote:
>> Hello,
>> here's the error I get:
>>
>> lua error : function call: 
>> ...si/context/lmtx-latest/tex/texmf-linux-64/bin/mtxrun.lua:4548: bad 
>> argument #2 to 'lpegmatch' (string expected, got nil)
>>
>> BTW I was trying to compile lowlevel-expansion.tex in
>>
>> tex/texmf-context/doc/context/sources/general/manuals/lowlevel
>>
>> after I've seen (looking at the diffs in the git repo) there were some 
>> updates in the manual.
> It works here ... can you try with the top line removed? Otherwise we 
> need to zoom in on where it fails (some path split issue).
Yes, it's the runpath directive not working.
Massi
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Re: error in mtxrun.lua line 4548 in August 24th update

[Hans Hagen via ntg-context]

On 8/25/2021 1:20 PM, mf via ntg-context wrote:
> Il 25/08/21 13:06, Hans Hagen ha scritto:
>> On 8/25/2021 11:18 AM, mf via ntg-context wrote:
>>> Hello,
>>> here's the error I get:
>>>
>>> lua error : function call: 
>>> ...si/context/lmtx-latest/tex/texmf-linux-64/bin/mtxrun.lua:4548: bad 
>>> argument #2 to 'lpegmatch' (string expected, got nil)
>>>
>>> BTW I was trying to compile lowlevel-expansion.tex in
>>>
>>> tex/texmf-context/doc/context/sources/general/manuals/lowlevel
>>>
>>> after I've seen (looking at the diffs in the git repo) there were 
>>> some updates in the manual.
>> It works here ... can you try with the top line removed? Otherwise we 
>> need to zoom in on where it fails (some path split issue).
> Yes, it's the runpath directive not working.
ok, so can you track that down in mtx-context.lua? (i know you can)

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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___________________________________________________________________________________

Re: error in mtxrun.lua line 4548 in August 24th update

[mf via ntg-context]

Il 25/08/21 14:06, Hans Hagen ha scritto:
> On 8/25/2021 1:20 PM, mf via ntg-context wrote:
>> Il 25/08/21 13:06, Hans Hagen ha scritto:
>>> On 8/25/2021 11:18 AM, mf via ntg-context wrote:
>>>> Hello,
>>>> here's the error I get:
>>>>
>>>> lua error : function call: 
>>>> ...si/context/lmtx-latest/tex/texmf-linux-64/bin/mtxrun.lua:4548: 
>>>> bad argument #2 to 'lpegmatch' (string expected, got nil)
>>>>
>>>> BTW I was trying to compile lowlevel-expansion.tex in
>>>>
>>>> tex/texmf-context/doc/context/sources/general/manuals/lowlevel
>>>>
>>>> after I've seen (looking at the diffs in the git repo) there were 
>>>> some updates in the manual.
>>> It works here ... can you try with the top line removed? Otherwise we 
>>> need to zoom in on where it fails (some path split issue).
>> Yes, it's the runpath directive not working.
> ok, so can you track that down in mtx-context.lua? (i know you can)
> 

The problem is that the argument "one" is nil, but the function 
file.join checks only for one=="".

Lines 4541--4548:

4541  function file.join(one,two,three,...)
4542   if not two then
4543    return one=="" and one or lpegmatch(reslasher,one)
4544   end
4545   if one=="" then
4546    return lpegmatch(stripper,three and concat({ two,three,... 
},"/") or two)
4547   end
4548   if lpegmatch(isnetwork,one) then

At line 4545 you check only for one being an empty string, but it 
happens to be nil, so the program fails at line 4548.

Patching line 4545 like this:

4545   if not one or one=="" then

removes the error.

I leave to you whether the "one" argument should arrive nil to that 
line, or it should be normalized to an empty string before entering 
file.join.

Massi
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