Bugzilla

Martin, could you try these testcases?  If there's an automagic threshold in the neighborhood of 255 or 260, these might be on either side of it:

(A) This has a 261-character-long title:
`data:text/html,<title>LongTitleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</title>`

(B) This has a 254-character-long title:
`data:text/html,<title>LongTitleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</title>`

I predict that (A) might be "bad" and (B)" might be "good".  If so, perhaps you could try adding characters to the "good" one 1 at a time and see how many you have to add for it to trip over a limit into badness?

Martin, could you try these testcases?  If your troublesome print-driver has an automagic threshold in the neighborhood of 255 or 260, these would be on either side of it.

(A) This has a 261-character-long title [maybe "bad"?]
`data:text/html,<title>LongTitleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</title>`

(B) This has a 254-character-long title [maybe "good"?]
`data:text/html,<title>LongTitleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</title>`

I predict that (A) might be "bad" and (B)" might be "good".  If so, perhaps you could try adding characters to the "good" one 1 at a time and see how many you have to add for it to trip over a limit into badness?

(Note, presumably we [truncate](https://searchfox.org/mozilla-central/rev/54c533e94ae786056a43231f230c7d9b0773cb80/gfx/thebes/PrintTargetWindows.cpp#63-67,71-72) the first data URI from 261 to 259 (`MAX_PATH-1`) chars before the driver gets to see it. I just picked 261 as a simple "clearly larger than MAX_PATH" example.)

Martin, could you try these testcases?  If your troublesome print-driver has an automagic threshold in the neighborhood of 255 or 260, these would be on either side of it.

(A) This has a 261-character-long title [maybe "bad"?]
`data:text/html,<title>LongTitleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</title>`

(B) This has a 254-character-long title [maybe "good"?]
`data:text/html,<title>LongTitleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</title>`

I predict that (A) might be "bad" and (B)" might be "good".  If so, perhaps you could try adding characters to the "good" one 1 at a time and see how many you have to add for it to trip over a limit into badness?

(Note, presumably we [truncate](https://searchfox.org/mozilla-central/rev/54c533e94ae786056a43231f230c7d9b0773cb80/gfx/thebes/PrintTargetWindows.cpp#63-67,71-72) the first data URI from 261 to 259 (`MAX_PATH-1`) chars before the driver gets to see it. I just picked 261 as a simple "clearly larger than MAX_PATH" example, hypothetically equivalent to the troublesome testcases that we've been using so far.)

Martin, could you try these testcases?  If your troublesome print-driver has an automagic threshold in the neighborhood of 255 or 260, these would be on either side of it.

(A) This has a 261-character-long title [maybe "bad"?]
`data:text/html,<title>LongTitleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</title>`

(B) This has a 254-character-long title [maybe "good"?]
`data:text/html,<title>LongTitleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</title>`

I predict that (A) might be "bad" and (B)" might be "good".  If so, perhaps you could try adding characters to the "good" one 1 at a time and see how many you have to add for it to trip over a limit into badness?

(Note, presumably we [truncate](https://searchfox.org/mozilla-central/rev/54c533e94ae786056a43231f230c7d9b0773cb80/gfx/thebes/PrintTargetWindows.cpp#63-67,71-72) the first data URI from 261 to 259 (`MAX_PATH-1`) chars before the driver gets to see it. I just picked 261 as a simple "clearly larger than MAX_PATH" example, making it hypothetically equivalent to the troublesome testcases that we've been using so far.)