[lex] Replace 'could' and 'might'

jensmaurer · tkoeppe · commit d29ef68d3c7a · 2023-05-10T18:48:01.000+01:00
as directed by ISO/CS.
diff --git a/source/lex.tex b/source/lex.tex
@@ -514,7 +514,7 @@
 \begin{itemize}
 \item
 \indextext{literal!string!raw}%
-If the next character begins a sequence of characters that could be the prefix
+If the next character begins a sequence of characters that can be the prefix
 and initial double quote of a raw string literal, such as \tcode{R"}, the next preprocessing
 token shall be a raw string literal. Between the initial and final
 double quote characters of the raw string, any transformations performed in phase
@@ -532,7 +532,7 @@
 
 \item Otherwise,
 the next preprocessing token is the longest sequence of
-characters that could constitute a preprocessing token, even if that
+characters that matches the syntax of a preprocessing token, even if that
 would cause further lexical analysis to fail,
 except that a \grammarterm{header-name}\iref{lex.header} is only formed
 \begin{itemize}
@@ -2142,7 +2142,7 @@
 \end{example}
 The syntactic non-terminal preceding the \grammarterm{ud-suffix} in a
 \grammarterm{user-defined-literal} is taken to be the longest sequence of
-characters that could match that non-terminal.
+characters that matches the syntax of that non-terminal.
 
 \pnum
 A \grammarterm{user-defined-literal} is treated as a call to a literal operator or
