Whoops--I inadvertently sent this before I finished. Here is the complete question ...
I want to insert text code listings into Lyx so readers can copy and paste from the pdf document into their plain text editor software. To replicate my problem use the example lyx file belo. Export as pdf (LuaTex). In the pdf select the listing text 'x-y', copy onto the clipboard, then paste into a text editor. My editor complains that it cannot represent some of the characters. The '-' character in the listing is encoded as 3f hex instead of 2d hex as it would be with ASCII. As you can see in the example, I tried fooling around with the listings parameters by setting extendedchars=false but that did not help. Any suggestions as to how to fix this? Bob ------------ example.lyx-------------- #LyX 2.1 created this file. For more info see http://www.lyx.org/ \lyxformat 474 \begin_document \begin_header \textclass article \use_default_options true \maintain_unincluded_children false \language english \language_package default \inputencoding auto \fontencoding global \font_roman default \font_sans default \font_typewriter default \font_math auto \font_default_family default \use_non_tex_fonts false \font_sc false \font_osf false \font_sf_scale 100 \font_tt_scale 100 \graphics default \default_output_format default \output_sync 0 \bibtex_command default \index_command default \paperfontsize default \spacing single \use_hyperref false \papersize default \use_geometry false \use_package amsmath 1 \use_package amssymb 1 \use_package cancel 1 \use_package esint 1 \use_package mathdots 1 \use_package mathtools 1 \use_package mhchem 1 \use_package stackrel 1 \use_package stmaryrd 1 \use_package undertilde 1 \cite_engine basic \cite_engine_type default \biblio_style plain \use_bibtopic false \use_indices false \paperorientation portrait \suppress_date false \justification true \use_refstyle 1 \index Index \shortcut idx \color #008000 \end_index \secnumdepth 3 \tocdepth 3 \paragraph_separation indent \paragraph_indentation default \quotes_language english \papercolumns 1 \papersides 1 \paperpagestyle default \listings_params "extendedchars=false" \tracking_changes false \output_changes false \html_math_output 0 \html_css_as_file 0 \html_be_strict false \end_header \begin_body \begin_layout Standard \begin_inset Float figure wide false sideways false status open \begin_layout Plain Layout \begin_inset listings lstparams "basicstyle={\small},showstringspaces=false" inline false status open \begin_layout Plain Layout x-y \end_layout \end_inset \end_layout \end_inset \end_layout \end_body \end_document
