tests: fix and add lint for non-portable head -c N

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 95ad715a440998fc9ed9e21895dd8a8127b089fb..1c42364988ac1890007b617f50653061c1cc2350 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1225,8 +1225,10 @@ color.diff.<slot>::
        (highlighting whitespace errors), `oldMoved` (deleted lines),
        `newMoved` (added lines), `oldMovedDimmed`, `oldMovedAlternative`,
        `oldMovedAlternativeDimmed`, `newMovedDimmed`, `newMovedAlternative`
-       and `newMovedAlternativeDimmed` (See the '<mode>'
-       setting of '--color-moved' in linkgit:git-diff[1] for details).
+       `newMovedAlternativeDimmed` (See the '<mode>'
+       setting of '--color-moved' in linkgit:git-diff[1] for details),
+       `contextDimmed`, `oldDimmed`, `newDimmed`, `contextBold`,
+       `oldBold`, and `newBold` (see linkgit:git-range-diff[1] for details).
 
 color.decorate.<slot>::
        Use customized color for 'git log --decorate' output.  `<slot>` is one
@@ -1295,6 +1297,18 @@ color.push::
 color.push.error::
        Use customized color for push errors.
 
+color.remote::
+       If set, keywords at the start of the line are highlighted. The
+       keywords are "error", "warning", "hint" and "success", and are
+       matched case-insensitively. May be set to `always`, `false` (or
+       `never`) or `auto` (or `true`). If unset, then the value of
+       `color.ui` is used (`auto` by default).
+
+color.remote.<slot>::
+       Use customized color for each remote keyword. `<slot>` may be
+       `hint`, `warning`, `success` or `error` which match the
+       corresponding keyword.
+
 color.showBranch::
        A boolean to enable/disable color in the output of
        linkgit:git-show-branch[1]. May be set to `always`,