Bugs item #199, was opened at 2004-09-22 23:13 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=199&group_id=106 Category: hz Group: v1.20a

Status: Open Resolution: Fixed Priority: 5 Submitted By: Nobody (None) Assigned to: The Thanh Han (hanthethanh) Summary: font expansion: characters may vanish

Initial Comment: For extremely large shrink values, characters may not be visible in the pdf output (although the fonts seem to be embedded), e.g. in the following file: %---------------------------------------------- \hsize220pt \pdfadjustspacing=2 \font\testfont=cmr17 at 90pt\testfont \pdffontexpand\font 0 1000 100 autoexpand \efcode\font`\s=500 \efcode\font`\e=500 \efcode\font`\y=500 see what you get\penalty-10000 \bye %---------------------------------------------- or even worse: %---------------------------------------------- \hsize180pt \pdfadjustspacing=2 \font\testfont=cmr17 at 90pt\testfont \pdffontexpand\font 0 1000 100 autoexpand see what you get\penalty-10000 \bye %---------------------------------------------- The font `cmr17-Extend_100' will not be visible. I only managed to achieve this effect with extremely large font sizes, which may or may not be related (it could also be that I didn't find the `magic' \hsize). If you force the characters to shrink even more, for example by setting \hsize to 120pt in the latter test file, the unexpanded font will be used, thus printing the characters over each other. Regards, Robert PS. I didn't bother to create expanded fonts, so I cannot tell whether it depends on the autoexpand feature. ----------------------------------------------------------------------

Comment By: Martin Schröder (oneiros) Date: 2005-01-31 13:08

Message: Logged In: YES user_id=421 The state of the patch is indeed fuzzy; at least I did not apply it, but some parts are in. ---------------------------------------------------------------------- Comment By: Nobody (None) Date: 2005-01-31 02:59 Message: Logged In: NO It seems as if Hartmut's patch hasn't been applied, as the following test file will still produce incorrect output for both pdftex 1.20b and 1.20c-beta: %------------------------------------------------- \pdfadjustspacing=2 \font\testfont=cmr10 \testfont \pdffontexpand\font 0 1000 100 autoexpand \hsize40pt OK: text text text text\break not OK: text text text text\break \bye %------------------------------------------------- Regards, Robert ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2004-12-22 15:53 Message: Logged In: YES user_id=421 This has been fixed in 1.20b ---------------------------------------------------------------------- Comment By: Hartmut Henkel (hhenkel) Date: 2004-10-01 20:41 Message: Logged In: YES user_id=929 tiny patch tries to solve this bug. See README and PDF test file included. Regards, Hartmut ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2004-10-01 17:17 Message: Logged In: YES user_id=421 I you mean the effect in the attached pdf: This is either a bug in Jaws (png attached) or a bug in pdftex. gs 8.30, harlequin 5.3.4a and AR 5 all display the file distorted. :-( ---------------------------------------------------------------------- Comment By: Nobody (None) Date: 2004-09-29 00:06 Message: Logged In: NO But the problem I mentioned above in the last paragraph isn't related to Acrobat Reader, is it? % ------------------------------------------ \hsize35pt \pdfadjustspacing=2 \font\testfont=cmr12\testfont \pdffontexpand\font 0 1000 100 autoexpand text text text text\penalty-10000 \bye % ------------------------------------------ Seems like a sanity check is missing somewhere. If my guess is right, pdftex tries to use the font `cmr17-Extend_0', which (incorrectly) translates into the base font. What it should probably do is use the smallest available expanded font, i.e. in this case Extend_100, and make the line overfull. Regards, Robert. ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2004-09-27 17:27 Message: Logged In: YES user_id=421 An Acrobat Reader bug. :-) ---------------------------------------------------------------------- Comment By: Nobody (None) Date: 2004-09-23 00:02 Message: Logged In: NO Obviously, I filed this report too early. Sorry about that. It is not a pdftex bug, but appears to be a bug in Acrobat Reader 6. (Just to tell you what I saw:) At zoom level 200% or larger, the font most shrunk (Extend_100) is not visible on screen. That is, in the first example, I only see "See y e", in the second, nothing at all. However, if I zoom out, the characters re-appear. Sorry for not zooming out earlier. Regards, Robert. ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=199&group_id=106