READ-BDF Fix incorrect detection of Italic font slope from BDF font metadata. (#2132)

Fix incorrect detection of Italic font slope from BDF font metadata.

Author: MattHeffron

lispusers/READ-BDF

@@ -5,14 +5,13 @@ BITMAPHEIGHT BITMAPWIDTH BLACKSHADE BLTSHADE BOLD CONDENSED CHARSETINFO DISPLAY
 FONTPROP INPUT ITALIC LIGHT LRSH MEDIUM REGULAR TCONC UTOXCODE UTOXCODE? WRITESTRIKEFONTFILE)) 
 READTABLE "XCL" BASE 10)
 
-
(IL:FILECREATED "25-Apr-2025 10:10:08" IL:|{DSK}<home>matt>Interlisp>medley>lispusers>READ-BDF.;57|
 47436  
+
(IL:FILECREATED "30-Apr-2025 13:20:10" IL:|{DSK}<home>matt>Interlisp>medley>lispusers>READ-BDF.;61|
 47500  
 
       :EDIT-BY "mth"
 
-      :CHANGES-TO (IL:FUNCTIONS WRITE-BDF-TO-DISPLAYFONT-FILES READ-BDF BDF-TO-CHARSETINFO READ-GLYPH
-                         GET-FAMILY-FACE-SIZE-FROM-NAME SPLIT-FONT-NAME)
+      :CHANGES-TO (IL:FUNCTIONS GET-FAMILY-FACE-SIZE-FROM-NAME)
 
-      :PREVIOUS-DATE "23-Apr-2025 17:55:25" IL:|{DSK}<home>matt>Interlisp>medley>lispusers>READ-BDF.;54|
+      :PREVIOUS-DATE "25-Apr-2025 10:10:08" IL:|{DSK}<home>matt>Interlisp>medley>lispusers>READ-BDF.;60|
 )
 
 
@@ -282,10 +281,11 @@ FONTPROP INPUT ITALIC LIGHT LRSH MEDIUM REGULAR TCONC UTOXCODE UTOXCODE? WRITEST
                                                              :TEST
                                                              #'EQL)))))))))
 
-(DEFUN GET-FAMILY-FACE-SIZE-FROM-NAME
 (BDFONT)
        (IL:* IL:\; "Edited 23-Apr-2025 16:20 by mth")


+(DEFUN GET-FAMILY-FACE-SIZE-FROM-NAME
 (BDFONT)
        (IL:* IL:\; "Edited 30-Apr-2025 13:18 by mth")


+                                                      (IL:* IL:\; "Edited 23-Apr-2025 16:20 by mth")


                                                       (IL:* IL:\; "Edited  5-Feb-2025 12:56 by mth")

    (UNLESS (TYPEP BDFONT 'BDF-FONT)
-          (ERROR "Not a  BDF-FONT: ~S~%" BDFONT))
+          (ERROR "Not a BDF-FONT: ~S~%" BDFONT))
    (DESTRUCTURING-BIND (FOUNDRY FAMILY WEIGHT SLANT EXPANSION ADD_STYLE_NAME
                               PIXEL-SIZE POINT-SIZE)
           (SPLIT-FONT-NAME
 (BF-NAME BDFONT))                 (IL:* IL:\; "Parse as XLFD format")

@@ -300,10 +300,11 @@ FONTPROP INPUT ITALIC LIGHT LRSH MEDIUM REGULAR TCONC UTOXCODE UTOXCODE? WRITEST
                                                      (#\D . BOLD)
                                                      (#\L . LIGHT)))))
                            'MEDIUM))                         (IL:* IL:\; "DemiBold => BOLD")

-          (SETQ SLANT (OR (AND SLANT (CDR (ASSOC (STRING-UPCASE SLANT)
-                                                 '(("R" . REGULAR)
-                                                   ("I" . ITALIC)
-                                                   ("O" . ITALIC)))))
+          (SETQ SLANT (OR (AND SLANT (CDR (ASSOC (CHAR-UPCASE (ELT SLANT 0))
+                                                 '((REGULAR)
+                                                   (#\R . REGULAR)
+                                                   (#\I . ITALIC)
+                                                   (#\O . ITALIC)))))
                           'REGULAR))                         (IL:* IL:\; "Oblique => ITALIC")

                                                              (IL:* IL:\; "Ignore others")

           (SETQ EXPANSION (OR (AND EXPANSION (CDR (ASSOC (CHAR-UPCASE (ELT EXPANSION 0))
@@ -822,10 +823,10 @@ FONTPROP INPUT ITALIC LIGHT LRSH MEDIUM REGULAR TCONC UTOXCODE UTOXCODE? WRITEST
 
 (IL:PUTPROPS IL:READ-BDF
 IL:DATABASE
 IL:NO)
 (IL:DECLARE\: IL:DONTCOPY
-  (IL:FILEMAP (NIL (2427 10386 (BDF-TO-CHARSETINFO 2427 . 10386)) (10388 16258 (BDF-TO-FONTDESCRIPTOR 
-10388 . 16258)) (16260 19623 (GET-FAMILY-FACE-SIZE-FROM-NAME 16260 . 19623)) (19625 26436 (
-GLYPHS-BY-CHARSET 19625 . 26436)) (26438 27863 (PACKFILENAME.STRING 26438 . 27863)) (27865 34669 (
-READ-BDF 27865 . 34669)) (34671 34994 (READ-DELIMITED-LIST-FROM-STRING 34671 . 34994)) (34996 41484 (
-READ-GLYPH 34996 . 41484)) (41486 42227 (SPLIT-FONT-NAME 41486 . 42227)) (42229 46011 (
-WRITE-BDF-TO-DISPLAYFONT-FILES 42229 . 46011)))))
+  (IL:FILEMAP (NIL (2316 10275 (BDF-TO-CHARSETINFO 2316 . 10275)) (10277 16147 (BDF-TO-FONTDESCRIPTOR 
+10277 . 16147)) (16149 19687 (GET-FAMILY-FACE-SIZE-FROM-NAME 16149 . 19687)) (19689 26500 (
+GLYPHS-BY-CHARSET 19689 . 26500)) (26502 27927 (PACKFILENAME.STRING 26502 . 27927)) (27929 34733 (
+READ-BDF 27929 . 34733)) (34735 35058 (READ-DELIMITED-LIST-FROM-STRING 34735 . 35058)) (35060 41548 (
+READ-GLYPH 35060 . 41548)) (41550 42291 (SPLIT-FONT-NAME 41550 . 42291)) (42293 46075 (
+WRITE-BDF-TO-DISPLAYFONT-FILES 42293 . 46075)))))
 IL:STOP