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master fe903c5: Allow composition of pure-ASCII strings in the mode line
From: |
Eli Zaretskii |
Subject: |
master fe903c5: Allow composition of pure-ASCII strings in the mode line |
Date: |
Sat, 8 Feb 2020 08:43:00 -0500 (EST) |
branch: master
commit fe903c5ab7354b97f80ecf1b01ca3ff1027be446
Author: Eli Zaretskii <address@hidden>
Commit: Eli Zaretskii <address@hidden>
Allow composition of pure-ASCII strings in the mode line
* src/composite.c (Fcomposition_get_gstring): Allow unibyte
strings if they are pure ASCII, by copying text into a
multibyte string.
---
src/composite.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/src/composite.c b/src/composite.c
index 53e6930..05365cf 100644
--- a/src/composite.c
+++ b/src/composite.c
@@ -1746,7 +1746,18 @@ should be ignored. */)
CHECK_STRING (string);
validate_subarray (string, from, to, SCHARS (string), &frompos, &topos);
if (! STRING_MULTIBYTE (string))
- error ("Attempt to shape unibyte text");
+ {
+ ptrdiff_t i;
+
+ for (i = SBYTES (string) - 1; i >= 0; i--)
+ if (!ASCII_CHAR_P (SREF (string, i)))
+ error ("Attempt to shape unibyte text");
+ /* STRING is a pure-ASCII string, so we can convert it (or,
+ rather, its copy) to multibyte and use that thereafter. */
+ Lisp_Object string_copy = Fconcat (1, &string);
+ STRING_SET_MULTIBYTE (string_copy);
+ string = string_copy;
+ }
frombyte = string_char_to_byte (string, frompos);
}
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