[groff] 15/23: [eqn]: Trivially refactor.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit da4ab3e537f9c88d0b5aac45d81e19703fea4d43
Author: G. Branden Robinson <g.branden.robinson@gmail.com>
AuthorDate: Fri Aug 11 20:35:21 2023 -0500

    [eqn]: Trivially refactor.
    
    * src/preproc/eqn/main.cpp (input_char_description): Migrate to
      `const`-qualified object to size an array of length computed at
      compile time and avoid repeating lengthy expression.
---
 ChangeLog                | 8 ++++++++
 src/preproc/eqn/main.cpp | 5 ++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index aff853bea..da4bd9f2d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2023-08-11  G. Branden Robinson <g.branden.robinson@gmail.com>
+
+       [eqn]: Trivially refactor.
+
+       * src/preproc/eqn/main.cpp (input_char_description): Migrate to
+       `const`-qualified object to size an array of length computed at
+       compile time and avoid repeating lengthy expression.
+
 2023-08-10  G. Branden Robinson <g.branden.robinson@gmail.com>
 
        [man]: Add new `TS` register to configure required separation
diff --git a/src/preproc/eqn/main.cpp b/src/preproc/eqn/main.cpp
index 324e2b4fb..19c8b29a5 100644
--- a/src/preproc/eqn/main.cpp
+++ b/src/preproc/eqn/main.cpp
@@ -62,9 +62,8 @@ static const char *input_char_description(int c)
   case '\177':
     return "a delete character";
   }
-  size_t bufsz = sizeof "character code " + INT_DIGITS + 1;
-  // repeat expression; no VLAs in ISO C++
-  static char buf[sizeof "character code " + INT_DIGITS + 1];
+  const size_t bufsz = sizeof "character code " + INT_DIGITS + 1;
+  static char buf[bufsz];
   (void) memset(buf, 0, bufsz);
   if (csprint(c)) {
     buf[0] = '\'';