Bug #14027
Updated by mjago (Martyn Jago) over 6 years ago
Where you have two or more embedded expressions on the same line within a squiggly heredoc seperated by whitespace, Ripper considers that whitespace as ignored space despite it not being at the beginning of a line. Below is a diff of lexer output between identical heredoc and squiggly heredoc to highlight: ~~~ diff [[[1, 0], :on_ignored_nl, "\n", EXPR_BEG], -[[[1, - [[2, 0], :on_heredoc_beg, "<<-E", EXPR_BEG], +[[[1, + [[2, 0], :on_heredoc_beg, "<<~E", EXPR_BEG], [[1, [[2, 4], :on_nl, "\n", EXPR_BEG], [[2, [[3, 0], :on_embexpr_beg, "\#{", EXPR_BEG], [[2, [[3, 2], :on_int, "1", "3", EXPR_END|EXPR_ENDARG], [[2, [[3, 3], :on_embexpr_end, "}", EXPR_END], - [[2, [[3, 4], :on_tstring_content, " ", EXPR_BEG], + [[2, [[3, 4], :on_ignored_sp, " ", EXPR_BEG], [[2, [[3, 5], :on_embexpr_beg, "\#{", EXPR_BEG], [[2, [[3, 7], :on_sp, " ", EXPR_BEG], [[3, 8], :on_int, "2", "4", EXPR_END|EXPR_ENDARG], [[2, 8], [[3, 9], :on_sp, " ", EXPR_END|EXPR_ENDARG], [[3, 10], :on_embexpr_end, "}", EXPR_END], [[2, 9], [[3, 11], :on_tstring_content, "\n", EXPR_BEG], [[3, [[4, 0], :on_heredoc_end, "E", EXPR_BEG]] ~~~ Also the sexp shows the whitespace as an empty string: ~~~ diff [:program, [[:string_literal, [:string_content, [:string_embexpr, [[:@int, "1", [2, 2]]]], - [:@tstring_content, " ", [2, 4]], + [:@tstring_content, "", [2, 5]], 7]], [:string_embexpr, [[:@int, "2", [2, 7]]]], 9]]]], [:@tstring_content, "\n", [2, 9]]]]]] 11]]]]]] ~~~ This can be seen on head, 2.4.2, and 2.3.5 Scripts used: ``` ruby -rripper -rpp -e '%{<<-E\n\#{1} \#{2}\nE}' ruby -rripper -rpp -e '%{<<~E\n\#{1} \#{2}\nE}' ```