[OE-core] [PATCH 1/1] python: fix importing readline with probably escape sequence output

[Saul Wold]

On 07/18/2013 03:55 AM, Hongxu Jia wrote:
> While imports readline in python, if the term in terminfo is available and
> it contains the variable 'km' and 'smm', the readline initialization will
> output the value of 'smm' which is the escape sequence '\E[?1034h'.
>
> 'km' means the terminal has a meta key which is a special key on MIT keyboards,
> 'smm' means turn on the meta key if this terminal has one. They don't exist in
> term 'dumb'.
>
> Explicitly use dumb as default terminal to avoid probably escape sequence
> output. The dumb is used to label tty lines when you don't know what kind
> of terminal is on it. The characteristics of an unknown terminal are the
> lowest common denominator.
>
> [YOCTO #4835]
> [YOCTO #4732]
>
> Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com>
> ---
>   meta/recipes-devtools/python/python.inc            |  4 ++-
>   ...e-explicitly-use-dumb-as-default-terminal.patch | 35 ++++++++++++++++++++++
>   2 files changed, 38 insertions(+), 1 deletion(-)
>   create mode 100644 meta/recipes-devtools/python/python/readline-explicitly-use-dumb-as-default-terminal.patch
>
> diff --git a/meta/recipes-devtools/python/python.inc b/meta/recipes-devtools/python/python.inc
> index 80609a8..2fc894d 100644
> --- a/meta/recipes-devtools/python/python.inc
> +++ b/meta/recipes-devtools/python/python.inc
> @@ -7,7 +7,9 @@ INC_PR = "r0"
>
>   LIC_FILES_CHKSUM = "file://LICENSE;md5=ed3abfd1059e2d3a36a8cff3986f9bb6"
>
> -SRC_URI = "http://www.python.org/ftp/python/${PV}/Python-${PV}.tar.bz2"
> +SRC_URI = "http://www.python.org/ftp/python/${PV}/Python-${PV}.tar.bz2 \
> +           file://readline-explicitly-use-dumb-as-default-terminal.patch \
> +"
>
>   SRC_URI[md5sum] = "c57477edd6d18bd9eeca2f21add73919"
>   SRC_URI[sha256sum] = "726457e11cb153adc3f428aaf1901fc561a374c30e5e7da6742c0742a338663c"
> diff --git a/meta/recipes-devtools/python/python/readline-explicitly-use-dumb-as-default-terminal.patch b/meta/recipes-devtools/python/python/readline-explicitly-use-dumb-as-default-terminal.patch
> new file mode 100644
> index 0000000..11928d1
> --- /dev/null
> +++ b/meta/recipes-devtools/python/python/readline-explicitly-use-dumb-as-default-terminal.patch
> @@ -0,0 +1,35 @@
> +readline: explicitly use dumb as default terminal
> +
> +Explicitly use dumb as default terminal to avoid probably
> +escape sequence output. The dumb is used to label tty lines
> +when you don't know what kind of terminal is on it. The
> +characteristics of an unknown terminal are the lowest common
> +denominator.
> +
> +Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com>
> +Upstream-Status: inappropriate [oe specific]
> +---
> + Modules/readline.c | 8 ++++++++
> + 1 file changed, 8 insertions(+)
> +
> +diff --git a/Modules/readline.c b/Modules/readline.c
> +--- a/Modules/readline.c
> ++++ b/Modules/readline.c
> +@@ -882,6 +882,14 @@ setup_readline(void)
> + #endif
> +     /* Force rebind of TAB to insert-tab */
> +     rl_bind_key('\t', rl_insert);
> ++
> ++    /* Explicitly use dumb as default terminal to avoid probably
> ++     * escape sequence output. The dumb is used to label tty lines
> ++     * when you don't know what kind of terminal is on it. The
> ++     * characteristics of an unknown terminal are the lowest common
> ++     * denominator.
> ++     */
> ++    rl_terminal_name = "dumb";
I don't think this will work, since it will force all terminal 
interactions that use python to be dumb, how will the bitbake knotty 
interface behave with dumb terminal.

Sau!

> +     /* Bind both ESC-TAB and ESC-ESC to the completion function */
> +     rl_bind_key_in_map ('\t', rl_complete, emacs_meta_keymap);
> +     rl_bind_key_in_map ('\033', rl_complete, emacs_meta_keymap);
> +--
> +1.8.1.2
> +
>