FONT: eliminate hyphen INFILEPs for font lookup #2405
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On Linux Mint 22.1 Cinnamon tracing |
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If all the information in the Interpress and postscript font-files is instantiated when the charsets are read into font descriptors, then we can convert them all to equivalent medleyfont format files and systematically eliminate the extra factor of 2 that comes from also searching charset subdirectories. At this point probably we can also set the default DISPLAYFONTDIRECTORIES and DISPLAYFONTEXTENSIONS in MEDLEY-INIT-VARS to point only to the medleyfont directory/extension. Anybody who wants to look at files in the old directories/formats can adjust their private values for these parameters. In the end , with default settings there should be only one INFILEP the first time there is a probe for a given font (existing or not) on any device--the caches would record the result for later probes. But this PR does not depend on those future updates. |
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Updated SPREADFONTSPEC macro: @hjellinek noted that it should use the FONTSPEC record rather than popping down the list |
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I updated to commit 707a415, still looking good. |
pamoroso
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It works with no issues in my tests.
\FINDFONTFILE does its own directory searching, avoiding the hyphen-processing of FINDFILE, as discussed in #2404 .
Looking up a non-existent display font with 2 directories and 2 extensions does 8 INFILEP's, 4 for the directory/extension combination times 2 for the charset/no-charset.
Before it did 32, because of parsing the family off as also a subdirectory.
Other devices, with single directories and single extensions (HTML?), should only do 2.
With more thought, we could also build in a little more knowledge (another FONTDEVICEPROP) about whether it is worth probing for the charset subdirectories c0>.