diff options
Diffstat (limited to 'src/casetab.c')
| -rw-r--r-- | src/casetab.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/casetab.c b/src/casetab.c index 874bb7599f0..a1e8b5a68fb 100644 --- a/src/casetab.c +++ b/src/casetab.c @@ -97,8 +97,9 @@ A case table is a char-table which maps characters to their lower-case equivalents. It also has three \"extra\" slots which may be additional char-tables or nil. These slots are called UPCASE, CANONICALIZE and EQUIVALENCES. -UPCASE maps each character to its upper-case equivalent; - if lower and upper case characters are in 1-1 correspondence, +UPCASE maps each non-upper-case character to its upper-case equivalent. + (The value in UPCASE for an upper-case character is never used.) + If lower and upper case characters are in 1-1 correspondence, you may use nil and the upcase table will be deduced from DOWNCASE. CANONICALIZE maps each character to a canonical equivalent; any two characters that are related by case-conversion have the same |