Bug in format?

[Peter Dyballa]

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In GNU Emacs 21.1 (macos-cw)
 of 2001-12-12 on ¡Mein-Titan!
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: nil

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

To output holidays I set:

calendar-date-display-form's value is
((format "%2s, %2s. %9s %4s"
  (substring dayname 0 2)
  day monthname year))

This function works well for all months containing no 8bit character:

Di,  1.    Januar 2002: Neujahr
Mi, 13.   Februar 2002: Aschermittwoch
Do, 14.   Februar 2002: Valentinstag
Fr,  8.  März 2002: Internationaler Frauentag
Mi, 20.  März 2002: Frühlings-Tagundnachtgleiche um 8:16pm (MEZ)
Do, 28.  März 2002: Gründonnerstag
Fr, 29.  März 2002: Karfreitag
Sa, 30.  März 2002: Karsamstag
So, 31.  März 2002: Sommerzeit beginnt um 2:00am (MEZ)
So, 31.  März 2002: Ostersonntag
Mo,  1.     April 2002: Ostermontag
Mo,  1.     April 2002: 1. April
Mo, 23. September 2002: Herbst-Tagundnachtgleiche um 6:55am (MESZ)


Trying in *scratch* these

(message "%s" (format "%2s, %2s. %9s %4s" "Fr" "13" "März" "2001"))
(message "%s" (format "%2s, %2s. %9s %4s" "Fr" "13" "M\x8e4rz" "2001"))
(message "%s" (format "%2s, %2s. %9s %4s" "Fr" "13" "September" "2001"))

leads to the same faults. minibuffer displays first output's monthname
as 'M<box of 4 chars>rz'. *Messages* receives for second line only the
first character "F" to display (minibuffer sees all)!

holidays.el contains in lines# 209-211:

         (day (int-to-string (extract-calendar-day date)))
         (month (int-to-string month))
         (year (int-to-string (extract-calendar-year date))))

so a format of strings is correct. In calendar.el I have changed lines#
2406-2413:

(defvar calendar-day-name-array
  ["Sonntag" "Montag" "Dienstag" "Mittwoch" "Donnerstag" "Freitag"
"Samstag"]
  "Array of capitalized strings giving, in order, the day names.")

(defvar calendar-month-name-array
  ["Januar"  "Februar"  "März"  "April"   "Mai"      "Juni"
   "Juli"    "August"   "September" "Oktober" "November" "Dezember"]
  "Array of capitalized strings giving, in order, the month names.")

Using

  ["Januar"  "Februar"  "M\x8e4rz"  "April"   "Mai"      "Juni"

leeds to "ä" being output as "â" (permille/perthousand).
--
Greetings

  Pete