Rel styling $lineStyle does not work for sequence diagrams

[papa-vova]

Hi! Thank you for a super awesome tool.

I have a line styling issue with sequence diagram.

The code:

@startuml
!include https://raw.githubusercontent.com/plantuml-stdlib/C4-PlantUML/master/C4_Sequence.puml
AddRelTag("response", $lineStyle=DashedLine())

Container(a1, "a1")
Container(a2, "a2")
Rel(a1, a2, "request")
Rel(a2, a1, "response", $tags="response")

@enduml

produces the following output:

I would expect the response line to be dashed. Am I doing something wrong? can't google up anything helpful.

I am not sure if the line «Only following (extended) relationship specific macros is supported:» from the README forbids styling like this.

For container diagrams the same styling works perfectly well.

Thanks!

p.s.

[papa-vova]

also, when i change the include to the following:

!include <C4/C4_Sequence>

I get an error:

but i guess it's another issue... if at all

[kirchsth]

Hi @papa-vova,

A) related to !include <C4/C4_Sequence>:
I cannot reproduce the issue on the ex. online server.

A1) Can you reproduce it online and add the link
A2) If only offline, can you past the whole sample (maybe there is a typo,...?)

B) related to $lineStyle=DashedLine(): I have to check , maybe it was never working

BR Helmut

[papa-vova]

A) hmmm online everything works

here's the code:

@startuml
!include <C4/C4_Sequence>
AddRelTag("response", $lineStyle=DashedLine())

Container(a1, "a1")
Container(a2, "a2")
Rel(a1, a2, "request")
Rel(a2, a1, "response", $tags="response")

@enduml

[kirchsth]

Can you create attach your *.puml file and create a *.preproc file and attach it too (e.g. if your file is "sequence.puml" then you can generate it with following line)

java -jar plantuml-mit-1.2024.7.jar ./sequence.puml

java -jar plantuml-mit-1.2024.7.jar -preproc ./sequence.puml

[papa-vova]

rel styling bug.zip

[kirchsth]

Your attached *.preproc file is too small with 1.6kB (many lines are missing, but I don't know why); my local has ~39kB.
Maybe PlantUML has problems with your used codepage or an invisible char (but I didn't found one).
(the *.preproc file itself is a valid *.puml file, only all preprocessor commands are resolved)

Can you compile my file?

workingOnMyMachine.zip

If my file is working on your machine too, I would retype your file manually and check if the new *.puml is working.

PS.: I attached my *.preproc output from your file too that you can see the expected result

[kirchsth]

For the dotted line problem I have a workaround (but maybe I find a final solution over the weekend)

@startuml
!include <C4/C4_Sequence>

 ' defines a workaround arrow, with the a logical matching name "$response" that it can be used by the $rel argument
!$response = "-->"
....
Rel(a2, a1, "response", $rel = $response)

full sample

@startuml
!include <C4/C4_Sequence>

' defines a woraround arrow, with the a logical matching name "$response" that it can be used by the $rel argument
!$response = "-->"

AddRelTag("response", $textColor=$ARROW_COLOR, $lineColor=#red, $lineStyle=DashedLine())


System(c4stdlib, C4Version())

Container(a1, "a1")
Container(a2, "a2")
Rel(a1, a2, "request")

' legend not working legend
Rel(a2, a1, "response", $rel = $response)

Rel(a1, a2, "request2", $rel = $response)


' for a working legend you have to define the $tags too
Rel(a2, a1, "response2", $tags="response", $rel = $response)

SHOW_LEGEND()
@enduml

[kirchsth]

Based on following check, only the $lineStyle is not working. All other works

@startuml
!include <C4/C4_Sequence>

AddRelTag("response", $textColor="#green", $lineColor="red", $sprite="&envelope-closed", $techn="HTTPS", $legendSprite="&envelope-open", $legendText="response\nchanged", $lineStyle=DottedLine(), $lineThickness=3)

System(c4stdlib, C4Version())

Container(a1, "a1")

Rel(a1, a2, "request")
Rel(a2, a1, "response", $tags="response")

SHOW_LEGEND()
@enduml

[papa-vova]

If my file is working on your machine too, I would retype your file manually and check if the new *.puml is working.

hmmm
sequence.puml does not work for me (

strange. i have notepad++ as an editor, and the box in win10. the encoding is utf-8

Based on following check, only the $lineStyle is not working. All other works

yes i also checked colors & stuff before posting, only the line style seems to be off

[papa-vova]

I have a workaround

yes it works for me (quoting the original file where i've got this problem)

thanks! owe you one )

[papa-vova]

btw

full sample

i realized that stuff like $textColor=$ARROW_COLOR would not work as well, but $textColor=#red works

[kirchsth]

In the meantime I think you have a problem in your (downloaded) *.jar file or a problem with the encoding of your *.puml.
a) can you try to store your *.puml as ANSI
b) can you try it with an other/older, ex. plantuml-mit-1.2024.6.jar

PS.: $textColor=$ARROW_COLOR does no really change the color - because it is the same, it avoids only the "last text color" in the default text of the legend
Ex. with $textColor=$LEGEND_DARK_COLOR or $textColor=$SKETCH_WARNING_COLOR you should see the difference

[papa-vova]

can you try to store your *.puml as ANSI

papavova@Thinker:/mnt/c/Users/papa.vova/Downloads$ file rel\ styling\ bug.puml
rel styling bug.puml: ASCII text, with CRLF line terminators

does not seem to help (

can you try it with an other/older, ex. plantuml-mit-1.2024.6.jar

does not seem to help either (( error's exactly the same as far as i can tell:

@startuml
!include <C4/C4_Sequence>

Container(a1, "a1")
Container(a2, "a2")
Rel(a1, a2, "request")
Rel(a2, a1, "response")

@enduml

HOWEVER! i did have a jar that was 11Mb instead of 21+! that's what win explorer showed to me anyway. mystery how it even worked. maybe i should fully move to wsl or linux (

thanks anyway
i think it's a problem on my side, will try to figure it out
please do not bother any more. sorry (

[The-Lum]

Hi @papa-vova, @kirchsth

Here is a clue, from your screenshot:

• What are the characters before !include?

If that can help,
Regards,
Th.

[papa-vova]

Hi @The-Lum ! Yes I've noticed that, but I can't spot those characters anywhere.

Well anyway, here's what i did now:

1. fully retyped the original file (with Sequence)
2. got the same error
3. replaced Sequence with Container
4. got a proper diagram

(PlantUML runs on Win, the shell is on WSL2 which does not have Java, sorry about the mess)