lexer: only allow one leading dot in symbols to avoid clash with ..

The latter is used for ranges. Previously 0..Bdisp_PutDisp_DD would parse as 0 then the symbol `..Bdisp_PutDisp_DD`.
2022-12-08 17:46:30 +01:00 · 2022-12-08 17:46:30 +01:00 · a277a4ffad
parent 0a908ad835
commit a277a4ffad
1 changed files with 1 additions and 1 deletions
--- a/shell/lexer.l
+++ b/shell/lexer.l
@ -144,7 +144,7 @@ num          ({num_hex}|{num_dec}|{num_bin}){num_suffix}?

 syscall      [%][a-fA-F0-9]+
 option       [a-zA-Z]+=[^ ]*
-symbol       [a-zA-Z_.][a-zA-Z0-9_.]*
+symbol       \.|\.?[a-zA-Z_][a-zA-Z0-9_.]*

 space        [ \t]+