Thread: [Gnuplot-info] Problems with long plot command (main)

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[Gnuplot-info] Problems with long plot command (main)

From: Hernán De A. <var...@gm...> - 2026-04-12 13:12:23

Hi

We recently had some discussion on problems with long commands. If I 
understand correctly it had to do with cases where a file had no data 
and notitle was passed.

I am now encountering a similar problem with a script that uses a long 
plot command. I use this script often and that never previously had 
issues with it. The script has a long plot command involving 52 small 
files (5 of which currently have no data points) to be plotted as boxes 
where all calls have the "notitle" tag (see below).

The script works if no title tag is passed, but it will fail with the 
notitle tag (as below), or with some title (e.g. "title 'title'").

It seems that the fix done recently may require a different approach but 
I am unsure what that may be. In my case I wish the "notitle" tag could 
be passed and understood by gnuplot as before.

Any hint will be appreciated.

Thanks

Hernán

PS: this occurs while using main branch


gnuplot script:

set terminal pngcairo enhanced size 960,640 font "DejaVu-Sans,9"
set output 'file.png'
set title 'my title' font "DejaVu-Sans-Bold,12"
set key left
set grid
set xrange [0.5:52.5]
set xtics 2
set ylabel "qty"
set style fill transparent solid 0.5
plot  'foo-0.dat' u (0):1 w boxplot lw 2 notitle, 'foo-1.dat' u (1):1 w 
boxplot lw 2 notitle, 'foo-2.dat' u (2):1 w boxplot lw 2 notitle, 
'foo-3.dat' u (3):1 w boxplot lw 2 notitle, 'foo-4.dat' u (4):1 w 
boxplot lw 2 notitle, 'foo-5.dat' u (5):1 w boxplot lw 2 notitle, 
'foo-6.dat' u (6):1 w boxplot lw 2 notitle, 'foo-7.dat' u (7):1 w 
boxplot lw 2 notitle, 'foo-8.dat' u (8):1 w boxplot lw 2 notitle, 
'foo-9.dat' u (9):1 w boxplot lw 2 notitle, 'foo-10.dat' u (10):1 w 
boxplot lw 2 notitle, 'foo-11.dat' u (11):1 w boxplot lw 2 notitle, 
'foo-12.dat' u (12):1 w boxplot lw 2 notitle, 'foo-13.dat' u (13):1 w 
boxplot lw 2 notitle, 'foo-14.dat' u (14):1 w boxplot lw 2 notitle, 
'foo-15.dat' u (15):1 w boxplot lw 2 notitle, 'foo-16.dat' u (16):1 w 
boxplot lw 2 notitle, 'foo-17.dat' u (17):1 w boxplot lw 2 notitle, 
'foo-18.dat' u (18):1 w boxplot lw 2 notitle, 'foo-19.dat' u (19):1 w 
boxplot lw 2 notitle, 'foo-20.dat' u (20):1 w boxplot lw 2 notitle, 
'foo-21.dat' u (21):1 w boxplot lw 2 notitle, 'foo-22.dat' u (22):1 w 
boxplot lw 2 notitle, 'foo-23.dat' u (23):1 w boxplot lw 2 notitle, 
'foo-24.dat' u (24):1 w boxplot lw 2 notitle, 'foo-25.dat' u (25):1 w 
boxplot lw 2 notitle, 'foo-26.dat' u (26):1 w boxplot lw 2 notitle, 
'foo-27.dat' u (27):1 w boxplot lw 2 notitle, 'foo-28.dat' u (28):1 w 
boxplot lw 2 notitle, 'foo-29.dat' u (29):1 w boxplot lw 2 notitle, 
'foo-30.dat' u (30):1 w boxplot lw 2 notitle, 'foo-31.dat' u (31):1 w 
boxplot lw 2 notitle, 'foo-32.dat' u (32):1 w boxplot lw 2 notitle, 
'foo-33.dat' u (33):1 w boxplot lw 2 notitle, 'foo-34.dat' u (34):1 w 
boxplot lw 2 notitle, 'foo-35.dat' u (35):1 w boxplot lw 2 notitle, 
'foo-36.dat' u (36):1 w boxplot lw 2 notitle, 'foo-37.dat' u (37):1 w 
boxplot lw 2 notitle, 'foo-38.dat' u (38):1 w boxplot lw 2 notitle, 
'foo-39.dat' u (39):1 w boxplot lw 2 notitle, 'foo-40.dat' u (40):1 w 
boxplot lw 2 notitle, 'foo-41.dat' u (41):1 w boxplot lw 2 notitle, 
'foo-42.dat' u (42):1 w boxplot lw 2 notitle, 'foo-43.dat' u (43):1 w 
boxplot lw 2 notitle, 'foo-44.dat' u (44):1 w boxplot lw 2 notitle, 
'foo-45.dat' u (45):1 w boxplot lw 2 notitle, 'foo-46.dat' u (46):1 w 
boxplot lw 2 notitle, 'foo-47.dat' u (47):1 w boxplot lw 2 notitle, 
'foo-48.dat' u (48):1 w boxplot lw 2 notitle, 'foo-49.dat' u (49):1 w 
boxplot lw 2 notitle, 'foo-50.dat' u (50):1 w boxplot lw 2 notitle, 
'foo-51.dat' u (51):1 w boxplot lw 2 notitle, 'foo-52.dat' u (52):1 w 
boxplot lw 2 notitle,



Stdout:

"gnuplot.conf" line 11: invalid command

Re: [Gnuplot-info] Problems with long plot command (main)

From: Hernán De A. <var...@gm...> - 2026-04-12 15:12:44

Hi again

Just a not, as a work around for this particular case I used "unset key" 
for the entire plot. I still need to omit title tags to avoid fails.

/H.

Den 2026-04-12 kl. 15:12, skrev Hernán De Angelis:
> Hi
>
> We recently had some discussion on problems with long commands. If I 
> understand correctly it had to do with cases where a file had no data 
> and notitle was passed.
>
> I am now encountering a similar problem with a script that uses a long 
> plot command. I use this script often and that never previously had 
> issues with it. The script has a long plot command involving 52 small 
> files (5 of which currently have no data points) to be plotted as 
> boxes where all calls have the "notitle" tag (see below).
>
> The script works if no title tag is passed, but it will fail with the 
> notitle tag (as below), or with some title (e.g. "title 'title'").
>
> It seems that the fix done recently may require a different approach 
> but I am unsure what that may be. In my case I wish the "notitle" tag 
> could be passed and understood by gnuplot as before.
>
> Any hint will be appreciated.
>
> Thanks
>
> Hernán
>
> PS: this occurs while using main branch
>
>
> gnuplot script:
>
> set terminal pngcairo enhanced size 960,640 font "DejaVu-Sans,9"
> set output 'file.png'
> set title 'my title' font "DejaVu-Sans-Bold,12"
> set key left
> set grid
> set xrange [0.5:52.5]
> set xtics 2
> set ylabel "qty"
> set style fill transparent solid 0.5
> plot  'foo-0.dat' u (0):1 w boxplot lw 2 notitle, 'foo-1.dat' u (1):1 
> w boxplot lw 2 notitle, 'foo-2.dat' u (2):1 w boxplot lw 2 notitle, 
> 'foo-3.dat' u (3):1 w boxplot lw 2 notitle, 'foo-4.dat' u (4):1 w 
> boxplot lw 2 notitle, 'foo-5.dat' u (5):1 w boxplot lw 2 notitle, 
> 'foo-6.dat' u (6):1 w boxplot lw 2 notitle, 'foo-7.dat' u (7):1 w 
> boxplot lw 2 notitle, 'foo-8.dat' u (8):1 w boxplot lw 2 notitle, 
> 'foo-9.dat' u (9):1 w boxplot lw 2 notitle, 'foo-10.dat' u (10):1 w 
> boxplot lw 2 notitle, 'foo-11.dat' u (11):1 w boxplot lw 2 notitle, 
> 'foo-12.dat' u (12):1 w boxplot lw 2 notitle, 'foo-13.dat' u (13):1 w 
> boxplot lw 2 notitle, 'foo-14.dat' u (14):1 w boxplot lw 2 notitle, 
> 'foo-15.dat' u (15):1 w boxplot lw 2 notitle, 'foo-16.dat' u (16):1 w 
> boxplot lw 2 notitle, 'foo-17.dat' u (17):1 w boxplot lw 2 notitle, 
> 'foo-18.dat' u (18):1 w boxplot lw 2 notitle, 'foo-19.dat' u (19):1 w 
> boxplot lw 2 notitle, 'foo-20.dat' u (20):1 w boxplot lw 2 notitle, 
> 'foo-21.dat' u (21):1 w boxplot lw 2 notitle, 'foo-22.dat' u (22):1 w 
> boxplot lw 2 notitle, 'foo-23.dat' u (23):1 w boxplot lw 2 notitle, 
> 'foo-24.dat' u (24):1 w boxplot lw 2 notitle, 'foo-25.dat' u (25):1 w 
> boxplot lw 2 notitle, 'foo-26.dat' u (26):1 w boxplot lw 2 notitle, 
> 'foo-27.dat' u (27):1 w boxplot lw 2 notitle, 'foo-28.dat' u (28):1 w 
> boxplot lw 2 notitle, 'foo-29.dat' u (29):1 w boxplot lw 2 notitle, 
> 'foo-30.dat' u (30):1 w boxplot lw 2 notitle, 'foo-31.dat' u (31):1 w 
> boxplot lw 2 notitle, 'foo-32.dat' u (32):1 w boxplot lw 2 notitle, 
> 'foo-33.dat' u (33):1 w boxplot lw 2 notitle, 'foo-34.dat' u (34):1 w 
> boxplot lw 2 notitle, 'foo-35.dat' u (35):1 w boxplot lw 2 notitle, 
> 'foo-36.dat' u (36):1 w boxplot lw 2 notitle, 'foo-37.dat' u (37):1 w 
> boxplot lw 2 notitle, 'foo-38.dat' u (38):1 w boxplot lw 2 notitle, 
> 'foo-39.dat' u (39):1 w boxplot lw 2 notitle, 'foo-40.dat' u (40):1 w 
> boxplot lw 2 notitle, 'foo-41.dat' u (41):1 w boxplot lw 2 notitle, 
> 'foo-42.dat' u (42):1 w boxplot lw 2 notitle, 'foo-43.dat' u (43):1 w 
> boxplot lw 2 notitle, 'foo-44.dat' u (44):1 w boxplot lw 2 notitle, 
> 'foo-45.dat' u (45):1 w boxplot lw 2 notitle, 'foo-46.dat' u (46):1 w 
> boxplot lw 2 notitle, 'foo-47.dat' u (47):1 w boxplot lw 2 notitle, 
> 'foo-48.dat' u (48):1 w boxplot lw 2 notitle, 'foo-49.dat' u (49):1 w 
> boxplot lw 2 notitle, 'foo-50.dat' u (50):1 w boxplot lw 2 notitle, 
> 'foo-51.dat' u (51):1 w boxplot lw 2 notitle, 'foo-52.dat' u (52):1 w 
> boxplot lw 2 notitle,
>
>
>
> Stdout:
>
> "gnuplot.conf" line 11: invalid command
>
>

Re: [Gnuplot-info] Problems with long plot command (main)

From: Ethan M. <eam...@gm...> - 2026-04-13 04:35:35

I cannot reproduce this problem by cut-and-paste from the text in
the previous message.  For me it succeeds using gnuplot executables with
and without the previous fix.  I tested with executables as far back as 5.4.

So I don't know what might be causing your problem.
Is it possible there is some issue with whitespace or non-printing
characters that did not survive being embedded in Email?

	Ethan

> 
> /H.
> 
> Den 2026-04-12 kl. 15:12, skrev Hernán De Angelis:
> > Hi
> >
> > We recently had some discussion on problems with long commands. If I 
> > understand correctly it had to do with cases where a file had no data 
> > and notitle was passed.
> >
> > I am now encountering a similar problem with a script that uses a long 
> > plot command. I use this script often and that never previously had 
> > issues with it. The script has a long plot command involving 52 small 
> > files (5 of which currently have no data points) to be plotted as 
> > boxes where all calls have the "notitle" tag (see below).
> >
> > The script works if no title tag is passed, but it will fail with the 
> > notitle tag (as below), or with some title (e.g. "title 'title'").
> >
> > It seems that the fix done recently may require a different approach 
> > but I am unsure what that may be. In my case I wish the "notitle" tag 
> > could be passed and understood by gnuplot as before.
> >
> > Any hint will be appreciated.
> >
> > Thanks
> >
> > Hernán
> >
> > PS: this occurs while using main branch
> >
> >
> > gnuplot script:
> >
> > set terminal pngcairo enhanced size 960,640 font "DejaVu-Sans,9"
> > set output 'file.png'
> > set title 'my title' font "DejaVu-Sans-Bold,12"
> > set key left
> > set grid
> > set xrange [0.5:52.5]
> > set xtics 2
> > set ylabel "qty"
> > set style fill transparent solid 0.5
> > plot  'foo-0.dat' u (0):1 w boxplot lw 2 notitle, 'foo-1.dat' u (1):1 
> > w boxplot lw 2 notitle, 'foo-2.dat' u (2):1 w boxplot lw 2 notitle, 
> > 'foo-3.dat' u (3):1 w boxplot lw 2 notitle, 'foo-4.dat' u (4):1 w 
> > boxplot lw 2 notitle, 'foo-5.dat' u (5):1 w boxplot lw 2 notitle, 
> > 'foo-6.dat' u (6):1 w boxplot lw 2 notitle, 'foo-7.dat' u (7):1 w 
> > boxplot lw 2 notitle, 'foo-8.dat' u (8):1 w boxplot lw 2 notitle, 
> > 'foo-9.dat' u (9):1 w boxplot lw 2 notitle, 'foo-10.dat' u (10):1 w 
> > boxplot lw 2 notitle, 'foo-11.dat' u (11):1 w boxplot lw 2 notitle, 
> > 'foo-12.dat' u (12):1 w boxplot lw 2 notitle, 'foo-13.dat' u (13):1 w 
> > boxplot lw 2 notitle, 'foo-14.dat' u (14):1 w boxplot lw 2 notitle, 
> > 'foo-15.dat' u (15):1 w boxplot lw 2 notitle, 'foo-16.dat' u (16):1 w 
> > boxplot lw 2 notitle, 'foo-17.dat' u (17):1 w boxplot lw 2 notitle, 
> > 'foo-18.dat' u (18):1 w boxplot lw 2 notitle, 'foo-19.dat' u (19):1 w 
> > boxplot lw 2 notitle, 'foo-20.dat' u (20):1 w boxplot lw 2 notitle, 
> > 'foo-21.dat' u (21):1 w boxplot lw 2 notitle, 'foo-22.dat' u (22):1 w 
> > boxplot lw 2 notitle, 'foo-23.dat' u (23):1 w boxplot lw 2 notitle, 
> > 'foo-24.dat' u (24):1 w boxplot lw 2 notitle, 'foo-25.dat' u (25):1 w 
> > boxplot lw 2 notitle, 'foo-26.dat' u (26):1 w boxplot lw 2 notitle, 
> > 'foo-27.dat' u (27):1 w boxplot lw 2 notitle, 'foo-28.dat' u (28):1 w 
> > boxplot lw 2 notitle, 'foo-29.dat' u (29):1 w boxplot lw 2 notitle, 
> > 'foo-30.dat' u (30):1 w boxplot lw 2 notitle, 'foo-31.dat' u (31):1 w 
> > boxplot lw 2 notitle, 'foo-32.dat' u (32):1 w boxplot lw 2 notitle, 
> > 'foo-33.dat' u (33):1 w boxplot lw 2 notitle, 'foo-34.dat' u (34):1 w 
> > boxplot lw 2 notitle, 'foo-35.dat' u (35):1 w boxplot lw 2 notitle, 
> > 'foo-36.dat' u (36):1 w boxplot lw 2 notitle, 'foo-37.dat' u (37):1 w 
> > boxplot lw 2 notitle, 'foo-38.dat' u (38):1 w boxplot lw 2 notitle, 
> > 'foo-39.dat' u (39):1 w boxplot lw 2 notitle, 'foo-40.dat' u (40):1 w 
> > boxplot lw 2 notitle, 'foo-41.dat' u (41):1 w boxplot lw 2 notitle, 
> > 'foo-42.dat' u (42):1 w boxplot lw 2 notitle, 'foo-43.dat' u (43):1 w 
> > boxplot lw 2 notitle, 'foo-44.dat' u (44):1 w boxplot lw 2 notitle, 
> > 'foo-45.dat' u (45):1 w boxplot lw 2 notitle, 'foo-46.dat' u (46):1 w 
> > boxplot lw 2 notitle, 'foo-47.dat' u (47):1 w boxplot lw 2 notitle, 
> > 'foo-48.dat' u (48):1 w boxplot lw 2 notitle, 'foo-49.dat' u (49):1 w 
> > boxplot lw 2 notitle, 'foo-50.dat' u (50):1 w boxplot lw 2 notitle, 
> > 'foo-51.dat' u (51):1 w boxplot lw 2 notitle, 'foo-52.dat' u (52):1 w 
> > boxplot lw 2 notitle,
> >
> >
> >
> > Stdout:
> >
> > "gnuplot.conf" line 11: invalid command
> >
> >
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>

Re: [Gnuplot-info] Problems with long plot command (main)

From: Hernán De A. <var...@gm...> - 2026-04-13 05:48:33

Hi Ethan,

Thanks for the response. I will dig a bit more in this and see if the 
problem is as you suggest.

Hernán

Den 2026-04-13 kl. 06:35, skrev Ethan Merritt:
> I cannot reproduce this problem by cut-and-paste from the text in
> the previous message.  For me it succeeds using gnuplot executables with
> and without the previous fix.  I tested with executables as far back as 5.4.
>
> So I don't know what might be causing your problem.
> Is it possible there is some issue with whitespace or non-printing
> characters that did not survive being embedded in Email?
>
> 	Ethan
>
>> /H.
>>
>> Den 2026-04-12 kl. 15:12, skrev Hernán De Angelis:
>>> Hi
>>>
>>> We recently had some discussion on problems with long commands. If I
>>> understand correctly it had to do with cases where a file had no data
>>> and notitle was passed.
>>>
>>> I am now encountering a similar problem with a script that uses a long
>>> plot command. I use this script often and that never previously had
>>> issues with it. The script has a long plot command involving 52 small
>>> files (5 of which currently have no data points) to be plotted as
>>> boxes where all calls have the "notitle" tag (see below).
>>>
>>> The script works if no title tag is passed, but it will fail with the
>>> notitle tag (as below), or with some title (e.g. "title 'title'").
>>>
>>> It seems that the fix done recently may require a different approach
>>> but I am unsure what that may be. In my case I wish the "notitle" tag
>>> could be passed and understood by gnuplot as before.
>>>
>>> Any hint will be appreciated.
>>>
>>> Thanks
>>>
>>> Hernán
>>>
>>> PS: this occurs while using main branch
>>>
>>>
>>> gnuplot script:
>>>
>>> set terminal pngcairo enhanced size 960,640 font "DejaVu-Sans,9"
>>> set output 'file.png'
>>> set title 'my title' font "DejaVu-Sans-Bold,12"
>>> set key left
>>> set grid
>>> set xrange [0.5:52.5]
>>> set xtics 2
>>> set ylabel "qty"
>>> set style fill transparent solid 0.5
>>> plot  'foo-0.dat' u (0):1 w boxplot lw 2 notitle, 'foo-1.dat' u (1):1
>>> w boxplot lw 2 notitle, 'foo-2.dat' u (2):1 w boxplot lw 2 notitle,
>>> 'foo-3.dat' u (3):1 w boxplot lw 2 notitle, 'foo-4.dat' u (4):1 w
>>> boxplot lw 2 notitle, 'foo-5.dat' u (5):1 w boxplot lw 2 notitle,
>>> 'foo-6.dat' u (6):1 w boxplot lw 2 notitle, 'foo-7.dat' u (7):1 w
>>> boxplot lw 2 notitle, 'foo-8.dat' u (8):1 w boxplot lw 2 notitle,
>>> 'foo-9.dat' u (9):1 w boxplot lw 2 notitle, 'foo-10.dat' u (10):1 w
>>> boxplot lw 2 notitle, 'foo-11.dat' u (11):1 w boxplot lw 2 notitle,
>>> 'foo-12.dat' u (12):1 w boxplot lw 2 notitle, 'foo-13.dat' u (13):1 w
>>> boxplot lw 2 notitle, 'foo-14.dat' u (14):1 w boxplot lw 2 notitle,
>>> 'foo-15.dat' u (15):1 w boxplot lw 2 notitle, 'foo-16.dat' u (16):1 w
>>> boxplot lw 2 notitle, 'foo-17.dat' u (17):1 w boxplot lw 2 notitle,
>>> 'foo-18.dat' u (18):1 w boxplot lw 2 notitle, 'foo-19.dat' u (19):1 w
>>> boxplot lw 2 notitle, 'foo-20.dat' u (20):1 w boxplot lw 2 notitle,
>>> 'foo-21.dat' u (21):1 w boxplot lw 2 notitle, 'foo-22.dat' u (22):1 w
>>> boxplot lw 2 notitle, 'foo-23.dat' u (23):1 w boxplot lw 2 notitle,
>>> 'foo-24.dat' u (24):1 w boxplot lw 2 notitle, 'foo-25.dat' u (25):1 w
>>> boxplot lw 2 notitle, 'foo-26.dat' u (26):1 w boxplot lw 2 notitle,
>>> 'foo-27.dat' u (27):1 w boxplot lw 2 notitle, 'foo-28.dat' u (28):1 w
>>> boxplot lw 2 notitle, 'foo-29.dat' u (29):1 w boxplot lw 2 notitle,
>>> 'foo-30.dat' u (30):1 w boxplot lw 2 notitle, 'foo-31.dat' u (31):1 w
>>> boxplot lw 2 notitle, 'foo-32.dat' u (32):1 w boxplot lw 2 notitle,
>>> 'foo-33.dat' u (33):1 w boxplot lw 2 notitle, 'foo-34.dat' u (34):1 w
>>> boxplot lw 2 notitle, 'foo-35.dat' u (35):1 w boxplot lw 2 notitle,
>>> 'foo-36.dat' u (36):1 w boxplot lw 2 notitle, 'foo-37.dat' u (37):1 w
>>> boxplot lw 2 notitle, 'foo-38.dat' u (38):1 w boxplot lw 2 notitle,
>>> 'foo-39.dat' u (39):1 w boxplot lw 2 notitle, 'foo-40.dat' u (40):1 w
>>> boxplot lw 2 notitle, 'foo-41.dat' u (41):1 w boxplot lw 2 notitle,
>>> 'foo-42.dat' u (42):1 w boxplot lw 2 notitle, 'foo-43.dat' u (43):1 w
>>> boxplot lw 2 notitle, 'foo-44.dat' u (44):1 w boxplot lw 2 notitle,
>>> 'foo-45.dat' u (45):1 w boxplot lw 2 notitle, 'foo-46.dat' u (46):1 w
>>> boxplot lw 2 notitle, 'foo-47.dat' u (47):1 w boxplot lw 2 notitle,
>>> 'foo-48.dat' u (48):1 w boxplot lw 2 notitle, 'foo-49.dat' u (49):1 w
>>> boxplot lw 2 notitle, 'foo-50.dat' u (50):1 w boxplot lw 2 notitle,
>>> 'foo-51.dat' u (51):1 w boxplot lw 2 notitle, 'foo-52.dat' u (52):1 w
>>> boxplot lw 2 notitle,
>>>
>>>
>>>
>>> Stdout:
>>>
>>> "gnuplot.conf" line 11: invalid command
>>>
>>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> Membership management via:https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>
>
>
>

Re: [Gnuplot-info] Problems with long plot command (main)

From: Hernán De A. <var...@gm...> - 2026-04-13 05:48:46

Hi Ethan,

Thanks for the response. I will dig a bit more in this and see if the 
problem is as you suggest.

H.

Den 2026-04-13 kl. 06:35, skrev Ethan Merritt:
> I cannot reproduce this problem by cut-and-paste from the text in
> the previous message.  For me it succeeds using gnuplot executables with
> and without the previous fix.  I tested with executables as far back as 5.4.
>
> So I don't know what might be causing your problem.
> Is it possible there is some issue with whitespace or non-printing
> characters that did not survive being embedded in Email?
>
> 	Ethan
>
>> /H.
>>
>> Den 2026-04-12 kl. 15:12, skrev Hernán De Angelis:
>>> Hi
>>>
>>> We recently had some discussion on problems with long commands. If I
>>> understand correctly it had to do with cases where a file had no data
>>> and notitle was passed.
>>>
>>> I am now encountering a similar problem with a script that uses a long
>>> plot command. I use this script often and that never previously had
>>> issues with it. The script has a long plot command involving 52 small
>>> files (5 of which currently have no data points) to be plotted as
>>> boxes where all calls have the "notitle" tag (see below).
>>>
>>> The script works if no title tag is passed, but it will fail with the
>>> notitle tag (as below), or with some title (e.g. "title 'title'").
>>>
>>> It seems that the fix done recently may require a different approach
>>> but I am unsure what that may be. In my case I wish the "notitle" tag
>>> could be passed and understood by gnuplot as before.
>>>
>>> Any hint will be appreciated.
>>>
>>> Thanks
>>>
>>> Hernán
>>>
>>> PS: this occurs while using main branch
>>>
>>>
>>> gnuplot script:
>>>
>>> set terminal pngcairo enhanced size 960,640 font "DejaVu-Sans,9"
>>> set output 'file.png'
>>> set title 'my title' font "DejaVu-Sans-Bold,12"
>>> set key left
>>> set grid
>>> set xrange [0.5:52.5]
>>> set xtics 2
>>> set ylabel "qty"
>>> set style fill transparent solid 0.5
>>> plot  'foo-0.dat' u (0):1 w boxplot lw 2 notitle, 'foo-1.dat' u (1):1
>>> w boxplot lw 2 notitle, 'foo-2.dat' u (2):1 w boxplot lw 2 notitle,
>>> 'foo-3.dat' u (3):1 w boxplot lw 2 notitle, 'foo-4.dat' u (4):1 w
>>> boxplot lw 2 notitle, 'foo-5.dat' u (5):1 w boxplot lw 2 notitle,
>>> 'foo-6.dat' u (6):1 w boxplot lw 2 notitle, 'foo-7.dat' u (7):1 w
>>> boxplot lw 2 notitle, 'foo-8.dat' u (8):1 w boxplot lw 2 notitle,
>>> 'foo-9.dat' u (9):1 w boxplot lw 2 notitle, 'foo-10.dat' u (10):1 w
>>> boxplot lw 2 notitle, 'foo-11.dat' u (11):1 w boxplot lw 2 notitle,
>>> 'foo-12.dat' u (12):1 w boxplot lw 2 notitle, 'foo-13.dat' u (13):1 w
>>> boxplot lw 2 notitle, 'foo-14.dat' u (14):1 w boxplot lw 2 notitle,
>>> 'foo-15.dat' u (15):1 w boxplot lw 2 notitle, 'foo-16.dat' u (16):1 w
>>> boxplot lw 2 notitle, 'foo-17.dat' u (17):1 w boxplot lw 2 notitle,
>>> 'foo-18.dat' u (18):1 w boxplot lw 2 notitle, 'foo-19.dat' u (19):1 w
>>> boxplot lw 2 notitle, 'foo-20.dat' u (20):1 w boxplot lw 2 notitle,
>>> 'foo-21.dat' u (21):1 w boxplot lw 2 notitle, 'foo-22.dat' u (22):1 w
>>> boxplot lw 2 notitle, 'foo-23.dat' u (23):1 w boxplot lw 2 notitle,
>>> 'foo-24.dat' u (24):1 w boxplot lw 2 notitle, 'foo-25.dat' u (25):1 w
>>> boxplot lw 2 notitle, 'foo-26.dat' u (26):1 w boxplot lw 2 notitle,
>>> 'foo-27.dat' u (27):1 w boxplot lw 2 notitle, 'foo-28.dat' u (28):1 w
>>> boxplot lw 2 notitle, 'foo-29.dat' u (29):1 w boxplot lw 2 notitle,
>>> 'foo-30.dat' u (30):1 w boxplot lw 2 notitle, 'foo-31.dat' u (31):1 w
>>> boxplot lw 2 notitle, 'foo-32.dat' u (32):1 w boxplot lw 2 notitle,
>>> 'foo-33.dat' u (33):1 w boxplot lw 2 notitle, 'foo-34.dat' u (34):1 w
>>> boxplot lw 2 notitle, 'foo-35.dat' u (35):1 w boxplot lw 2 notitle,
>>> 'foo-36.dat' u (36):1 w boxplot lw 2 notitle, 'foo-37.dat' u (37):1 w
>>> boxplot lw 2 notitle, 'foo-38.dat' u (38):1 w boxplot lw 2 notitle,
>>> 'foo-39.dat' u (39):1 w boxplot lw 2 notitle, 'foo-40.dat' u (40):1 w
>>> boxplot lw 2 notitle, 'foo-41.dat' u (41):1 w boxplot lw 2 notitle,
>>> 'foo-42.dat' u (42):1 w boxplot lw 2 notitle, 'foo-43.dat' u (43):1 w
>>> boxplot lw 2 notitle, 'foo-44.dat' u (44):1 w boxplot lw 2 notitle,
>>> 'foo-45.dat' u (45):1 w boxplot lw 2 notitle, 'foo-46.dat' u (46):1 w
>>> boxplot lw 2 notitle, 'foo-47.dat' u (47):1 w boxplot lw 2 notitle,
>>> 'foo-48.dat' u (48):1 w boxplot lw 2 notitle, 'foo-49.dat' u (49):1 w
>>> boxplot lw 2 notitle, 'foo-50.dat' u (50):1 w boxplot lw 2 notitle,
>>> 'foo-51.dat' u (51):1 w boxplot lw 2 notitle, 'foo-52.dat' u (52):1 w
>>> boxplot lw 2 notitle,
>>>
>>>
>>>
>>> Stdout:
>>>
>>> "gnuplot.conf" line 11: invalid command
>>>
>>>
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