[dcl.enum, conv.prom] Style min/max subscripts as labels, not variables.

source/conversions.tex

@@ -358,7 +358,7 @@
 A prvalue of an unscoped enumeration type whose underlying type is not
 fixed~(\ref{dcl.enum}) can be converted to a prvalue of the first of the following
 types that can represent all the values of the enumeration (i.e., the values in the
-range $b_\mathit{min}$ to $b_\mathit{max}$ as described in~\ref{dcl.enum}): \tcode{int},
+range $b_\text{min}$ to $b_\text{max}$ as described in~\ref{dcl.enum}): \tcode{int},
 \tcode{unsigned int}, \tcode{long} \tcode{int}, \tcode{unsigned long} \tcode{int},
 \tcode{long long int}, or \tcode{unsigned long long int}. If none of the types in that
 list can represent all the values of the enumeration, a prvalue of an unscoped

source/declarations.tex

@@ -2127,16 +2127,16 @@
 \indextext{signed integer representation!signed magnitude}%
 For an enumeration whose underlying type is fixed, the values of
 the enumeration are the values of the underlying type. Otherwise,
-for an enumeration where $e_\mathit{min}$ is the smallest enumerator and
-$e_\mathit{max}$ is the largest, the values of the enumeration are the
-values in the range $b_{min}$ to $b_{max}$, defined as follows: Let $K$
+for an enumeration where $e_\text{min}$ is the smallest enumerator and
+$e_\text{max}$ is the largest, the values of the enumeration are the
+values in the range $b_\text{min}$ to $b_\text{max}$, defined as follows: Let $K$
 be 1 for a two's complement representation and 0 for a ones' complement
-or sign-magnitude representation. $b_{max}$ is the smallest value
-greater than or equal to $max(|e_{min}| - K, |e_{max}|)$ and equal to
-$2^M-1$, where $M$ is a non-negative integer. $b_{min}$ is zero if
-$e_{min}$ is non-negative and $-(b_{max}+K)$ otherwise. The size of the
+or sign-magnitude representation. $b_\text{max}$ is the smallest value
+greater than or equal to $max(|e_\text{min}| - K, |e_\text{max}|)$ and equal to
+$2^M-1$, where $M$ is a non-negative integer. $b_\text{min}$ is zero if
+$e_\text{min}$ is non-negative and $-(b_\text{max}+K)$ otherwise. The size of the
 smallest bit-field large enough to hold all the values of the
-enumeration type is $max(M,1)$ if $b_{min}$ is zero and $M+1$ otherwise.
+enumeration type is $max(M,1)$ if $b_\text{min}$ is zero and $M+1$ otherwise.
 It is possible to define an enumeration that has values not defined by
 any of its enumerators. If the \grammarterm{enumerator-list} is empty, the
 values of the enumeration are as if the enumeration had a single enumerator with