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author | Eli Zaretskii <eliz@gnu.org> | 2020-09-19 19:54:01 +0300 |
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committer | Eli Zaretskii <eliz@gnu.org> | 2020-09-19 19:54:01 +0300 |
commit | df04f3e755f3001ebb9cc428faa7fa46059e636b (patch) | |
tree | acf478dc8aca3749f10ad6f9d5527cc29b05ed4c /doc | |
parent | fd1fe1e1ecb6c68bbdea4bf071166779388174d0 (diff) | |
download | emacs-df04f3e755f3001ebb9cc428faa7fa46059e636b.tar.gz |
Fix a rare segfault in syntax.c
* src/syntax.c (Fforward_comment): Prevent the loop for COUNT < 0
from going outside the valid range of character/byte positions.
(Bug#43499)
* doc/lispref/syntax.texi (Syntax Class Table): Mention the
"comment-fence" and "string-fence" as alternative names of 2
syntax classes.
Diffstat (limited to 'doc')
-rw-r--r-- | doc/lispref/syntax.texi | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/doc/lispref/syntax.texi b/doc/lispref/syntax.texi index b3c77665bae..b99b5de0b31 100644 --- a/doc/lispref/syntax.texi +++ b/doc/lispref/syntax.texi @@ -256,10 +256,11 @@ look in the standard syntax table to find the syntax of this character. @item Generic comment delimiters: @samp{!} -Characters that start or end a special kind of comment. @emph{Any} -generic comment delimiter matches @emph{any} generic comment -delimiter, but they cannot match a comment starter or comment ender; -generic comment delimiters can only match each other. +(This syntax class is also known as ``comment-fence''.) Characters +that start or end a special kind of comment. @emph{Any} generic +comment delimiter matches @emph{any} generic comment delimiter, but +they cannot match a comment starter or comment ender; generic comment +delimiters can only match each other. This syntax class is primarily meant for use with the @code{syntax-table} text property (@pxref{Syntax Properties}). You @@ -268,10 +269,11 @@ first and last characters of the range @code{syntax-table} properties identifying them as generic comment delimiters. @item Generic string delimiters: @samp{|} -Characters that start or end a string. This class differs from the -string quote class in that @emph{any} generic string delimiter can -match any other generic string delimiter; but they do not match -ordinary string quote characters. +(This syntax class is also known as ``string-fence''.) Characters +that start or end a string. This class differs from the string quote +class in that @emph{any} generic string delimiter can match any other +generic string delimiter; but they do not match ordinary string quote +characters. This syntax class is primarily meant for use with the @code{syntax-table} text property (@pxref{Syntax Properties}). You |