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Fix copying text properties by 'format'

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* src/editfns.c (styled_format): Add the spec beginning index
to the info recorded for each format spec, and use it to
detect the case that a format spec and its text property end
where the next spec with another property begins.  (Bug#32404)

* test/src/editfns-tests.el (format-properties): Add tests for
bug#32404.
This commit is contained in:
Eli Zaretskii 2018-08-09 18:08:35 +03:00
parent 96be6b6eb9
commit 71c92d8913
2 changed files with 25 additions and 3 deletions
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12
src/editfns.c
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@ -4257,6 +4257,9 @@ styled_format (ptrdiff_t nargs, Lisp_Object *args, bool message)
/* The start and end bytepos in the output string. */
ptrdiff_t start, end;
/* The start of the spec in the format string. */
ptrdiff_t fbeg;
/* Whether the argument is a string with intervals. */
bool_bf intervals : 1;
} *info;
@ -4408,6 +4411,7 @@ styled_format (ptrdiff_t nargs, Lisp_Object *args, bool message)
char conversion = *format++;
memset (&discarded[format0 - format_start], 1,
format - format0 - (conversion == '%'));
info[ispec].fbeg = format0 - format_start;
if (conversion == '%')
{
new_result = true;
@ -4981,7 +4985,9 @@ styled_format (ptrdiff_t nargs, Lisp_Object *args, bool message)
else if (discarded[bytepos] == 1)
{
position++;
if (fieldn < nspec && translated == info[fieldn].start)
if (fieldn < nspec
&& position > info[fieldn].fbeg
&& translated == info[fieldn].start)
{
translated += info[fieldn].end - info[fieldn].start;
fieldn++;
@ -5001,7 +5007,9 @@ styled_format (ptrdiff_t nargs, Lisp_Object *args, bool message)
else if (discarded[bytepos] == 1)
{
position++;
if (fieldn < nspec && translated == info[fieldn].start)
if (fieldn < nspec
&& position > info[fieldn].fbeg
&& translated == info[fieldn].start)
{
translated += info[fieldn].end - info[fieldn].start;
fieldn++;

16
test/src/editfns-tests.el
View file

@ -88,7 +88,21 @@
(format "%-10s" (concat (propertize "01" 'face 'bold)
(propertize "23" 'face 'underline)
(propertize "45" 'face 'italic)))
#("012345 " 0 2 (face bold) 2 4 (face underline) 4 10 (face italic)))))
#("012345 "
0 2 (face bold) 2 4 (face underline) 4 10 (face italic))))
;; Bug #32404
(should (ert-equal-including-properties
(format (concat (propertize "%s" 'face 'bold)
""
(propertize "%s" 'face 'error))
"foo" "bar")
#("foobar" 0 3 (face bold) 3 6 (face error))))
(should (ert-equal-including-properties
(format (concat "%s" (propertize "%s" 'face 'error)) "foo" "bar")
#("foobar" 3 6 (face error))))
(should (ert-equal-including-properties
(format (concat "%s " (propertize "%s" 'face 'error)) "foo" "bar")
#("foo bar" 4 7 (face error)))))
;; Tests for bug#5131.
(defun transpose-test-reverse-word (start end)