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-rw-r--r--miscutils/bc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c
index c5288102d..1e2ca8b83 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -2950,6 +2950,8 @@ static BC_STATUS zbc_lex_identifier(BcLex *l)
continue;
match:
// buf starts with keyword bc_lex_kws[i]
+ if (isalnum(buf[j]) || buf[j]=='_')
+ continue; // "ifz" does not match "if" keyword, "if." does
l->t.t = BC_LEX_KEY_1st_keyword + i;
if (!bc_lex_kws_POSIX(i)) {
s = bc_posix_error_fmt("%sthe '%.8s' keyword", "POSIX does not allow ", bc_lex_kws[i].name8);