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; Improve commentary in the last change

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* lisp/language/misc-lang.el: Minor copyedits of the commentary
regarding Egyptian hieroglyph support.
This commit is contained in:
Eli Zaretskii 2021-10-29 10:41:33 +03:00
parent 3da9fa875b
commit 08de838531
1 changed files with 12 additions and 7 deletions
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19
lisp/language/misc-lang.el
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@ -193,14 +193,19 @@ thin (i.e. 1-dot width) space."
#x13437
(list (vector "\U00013437[\U00013000-\U0001343F]+"
0 #'egyptian-shape-grouping)))
;; As of late 2021, Egyptian Hieroglyph Format Controls are not yet
;; supported in existing fonts and shaping engines, but some fonts
;; do provide ligatures with which texts in Egyptian Hieroglyphs are
;; correctly displayed. If and when these format controls are
;; supported, the five lines below (which cancel the effect of the
;; above lines) can be removed, and the entry in etc/HELLO can be
;; "Normal" hieroglyphs, for fonts that don't support the above
;; controls, but do shape sequences of hieroglyphs without the
;; controls.
;; FIXME: As of late 2021, Egyptian Hieroglyph Format Controls are
;; not yet supported in existing fonts and/or shaping engines, but
;; some fonts do provide ligatures with which texts in Egyptian
;; Hieroglyphs are correctly displayed. If and when these format
;; controls are supported, as described in section 11.4 "Egyptian
;; Hieroglyphs" of the Unicode Standard, the five lines below (which
;; allow composition of hieroglyphs without formatting controls
;; around) can be removed, and the entry in etc/HELLO can be
;; restored to:
;; Egyptian Hieroglyphs (𓂋𓐰𓏤𓈖𓆎𓅓𓏏𓐰𓊖) 𓅓𓊵𓐰𓐷𓏏𓊪𓐸, 𓇍𓇋𓂻𓍘𓇋
;; Egyptian Hieroglyphs (𓂋𓐰𓏤𓈖𓆎𓅓𓏏𓐰𓊖) 𓅓𓊵𓐰𓐷𓏏𓊪𓐸, 𓇍𓇋𓂻𓍘𓇋
(set-char-table-range
composition-function-table
'(#x13000 . #x1342E)