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864
by Andreas Roehler
column-marker.el merged |
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Commands `column-marker-1', `column-marker-2', and |
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`column-marker-3' each highlight a given column (using different |
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background colors, by default).
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- With no prefix argument, each highlights the current column
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(where the cursor is).
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- With a non-negative numeric prefix argument, each highlights that
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column.
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- With plain `C-u' (no number), each turns off its highlighting. |
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- With `C-u C-u', each turns off all column highlighting. |
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If two commands highlight the same column, the last-issued
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highlighting command shadows the other - only the last-issued
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highlighting is seen. If that "topmost" highlighting is then
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turned off, the other highlighting for that column then shows
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through.
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Examples:
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M-x column-marker-1 highlights the column where the cursor is, in
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face `column-marker-1'. |
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C-u 70 M-x column-marker-2 highlights column 70 in face |
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`column-marker-2'. |
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C-u 70 M-x column-marker-3 highlights column 70 in face
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`column-marker-3'. The face `column-marker-2' highlighting no |
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longer shows.
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C-u M-x column-marker-3 turns off highlighting for column-marker-3,
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so face `column-marker-2' highlighting shows again for column 70. |
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C-u C-u M-x column-marker-1 (or -2 or -3) erases all column |
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highlighting. |
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These commands use `font-lock-fontify-buffer', so syntax |
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highlighting (`font-lock-mode') must be turned on. There might be |
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a performance impact during refontification. |