lexer.rl: hex can be as long as we want

hex expression shared the esc_hex expression before.
But esc_hex is limited to 2 hexdecimal characters, and thus poor choice
for parsing hexdecimal numbers in source. (This is different from C
which allows "n" length hex escapes causing problems when you mix hex
escapes with strings for example)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fspec/lexer.rl b/src/fspec/lexer.rl
index 8fdc960..51d1a54 100644
--- a/src/fspec/lexer.rl
+++ b/src/fspec/lexer.rl
@@ -530,7 +530,7 @@ state_finish_declaration(struct state *state, const enum fspec_declaration decl)
    esc = [abfnrtv\\'"e];
    esc_chr = '\\';
    esc_hex = 'x' <: xdigit{2};
-   hex = '0' <: esc_hex;
+   hex = '0x' <: xdigit{1,};
    oct = [0-7]{1,3};
    dec = [\-+]? <: (([1-9] <: digit*) | '0');
    valid = ^cntrl;