Fix the following error seen on MacOS:
/usr/bin/awk: syntax error at source line 22 source file
header_pattern = >>> @ <<< /^[A-Z][[:alnum:]-]+:/
The @ character in front of regular expressions to pre-compile them
seems not in the POSIX specification. Replace them with regular strings
and call match() instead of the ~ operator.
Also, adjust the url_pattern expression for BSD awk which explicitly
states:
The awk utility is compliant with the IEEE Std 1003.1-2008 (“POSIX.1”)
specification, except awk does not support {n,m} pattern matching.
Use [[:lower:]]+ instead of [a-z]{2,6}.
Tested with:
GNU Awk 5.1.1
awk version 20121220 (FreeBSD)
Link: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/awk.html
Fixes: https://todo.sr.ht/~rjarry/aerc/96
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Koni Marti <koni.marti@gmail.com>
Diff chunks can occur in the middle of email conversations followed by
regular and/or quoted text. Handle that properly.
Change diff meta lines inside quotes to bold. Update the meta lines with
more combination for renamed, copied and deleted files.
Fix the diff_chunk invalid color code, only colorize the chunk
characters, not the whole line.
Remove redundant variable resets to 0.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-on-irc-by: Tim Culverhouse <tim@timculverhouse.com>
\x escape sequences are GNU specific. Use the octal escape code instead.
filters/calendar is beyond help. It would need a complete rewrite to
make it work with POSIX awk.
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>
mailto:email@domain.tld is the only exception that does not use the
<scheme>:// prefix.
Requested-by: Moritz Poldrack <moritz@poldrack.dev>
Signed-off-by: Robin Jarry <robin@jarry.cc>
Tested-by: Moritz Poldrack <moritz@poldrack.dev>
When a signature contains a line that starts with an url, the url is not
highlighted properly:
--
Foobar
[38;2;255;255;175mmhttps://foobar.org
The trailing m of the signature color start \x1b[38;2;175;135;255m is
considered as part of the URL scheme (i.e. mhttps:// instead of
https://). Colorize the URLs first before wrapping with the signature
color.
Fixes: df8c129235 ("filters: port colorize to awk")
Signed-off-by: Robin Jarry <robin@jarry.cc>
Python is not available on all systems. Port the colorize filter to awk
as it is a more widespread POSIX utility.
Users are free to copy the filter into their home dir and tweak the
colors to their needs. The highlighted items are:
=============== ======= ======= ========= =================
Item Red Green Blue Color
=============== ======= ======= ========= =================
quoted text 1 95 175 255 Blue
quoted text 2 255 135 0 Orange
quoted text 3 175 135 255 Purple
quoted text 4 255 95 215 Pink
quoted text * 128 128 128 Grey
diff meta 255 255 255 White bold
diff chunk 205 0 205 Cyan
diff added 0 205 0 Red
diff removed 205 0 0 Green
signature 175 135 255 Purple
header 175 135 255 Purple
url 255 255 175 Yellow
=============== ======= ======= ========= =================
This assumes a terminal emulator with true color support and with
a dark/black background.
Link: https://github.com/termstandard/colors
Signed-off-by: Robin Jarry <robin@jarry.cc>
This filter script is not compatible with the previous one. Rename it to
avoid issues with existing configs.
Fixes: bca93cd915 ("filters: add a more complete plaintext filter")
Signed-off-by: Robin Jarry <robin@jarry.cc>
Robin Jarry