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watch: Support ANSI 39,49 reset sequences

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ANSI colour sequences 39 and 49 reset the foreground and background
colours respectively. This feature was missing from watch using the
colour "-c" option.

References:
 Fixes #73
 https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters
This commit is contained in:
Craig Small 2017-12-20 22:09:41 +11:00
parent 1013f2719d
commit f9bef2b2c3
2 changed files with 7 additions and 0 deletions
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NEWS
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@ -24,6 +24,7 @@ procps-ng-NEXT
* top: provide proper multi-byte string handling issue #68
* watch: define HOST_NAME_MAX where not defined Debian #830734
* vmstat: Fix alignment for disk partition format issue #69
* watch: Support ANSI 39,49 reset sequences issue #73
procps-ng-3.3.12
----------------

6
watch.c
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@ -186,6 +186,12 @@ static int set_ansi_attribute(const int attrib)
case 27: /* unset inversed */
attributes &= ~A_REVERSE;
break;
case 39:
fg_col = 0;
break;
case 49:
bg_col = 0;
break;
default:
if (attrib >= 30 && attrib <= 37) { /* set foreground color */
fg_col = attrib - 30 + 1;