possible bug with pango: and & or & in text string

[fmw42]

see viewtopic.php?f=1&t=31723&p=144873#p144873

This fails:

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convert -size 100x100 -font arial -gravity center pango:"&åß∂ƒ©" tmp.png

as does

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convert -size 100x100 -font arial -gravity center pango:"&åß∂ƒ©" tmp.png

[fmw42]

Here is a workaround. Escape the ; as \;

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convert -size 100x100 -font arial -gravity center pango:"&amp\;åß∂ƒ©" tmp.png

It seems to work for me.

[snibgo]

Other workarounds:

1. Prefix with backslash, eg

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convert -size 100x100 -font arial -gravity center pango:"hello \& world" t.png

Yes, this works on Windows, where backslash isn't the escape.

2. Put the pango string in a file, at @ it, eg put

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Hello & world

... into pangoamp.txt, then:

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convert -size 100x100 -font arial -gravity center pango:@pangoamp.txt t.png

This is the problem cause:

pango.c function ReadPANGOImage() takes the string after "pango:", which is a kind-of filename.

It parses that string with property.c InterpretImageProperties(). This translates "\n" into newline, and other translations, including "&" to "&".

So a string with "&" will passed to pango with a naked "&".

That's the problem. I don't know the most appropriate cure.

[krukid]

note that to avoid the weird handling of html entities and backslashes you can also pipe the text via stdin:

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echo -n "& text" | magick -define pango:markup=false pango:@- tmp.png